Acting on a petition for certiorari, the United States Supreme Court in Jones v. Virginia , --- U.S. ----, 136 S.Ct. 1358 , 194 L.Ed.2d 340 (2016), vacated and remanded Jones v. Commonwealth ( Jones I ), 288 Va. 475 , 763 S.E.2d 823 (2014), for our reconsideration in light of Montgomery v. Louisiana , 577 U.S. ----, 136 S.Ct. 718 , 193 L.Ed.2d 599 (2016). Having done so, we now reinstate our holding in Jones I , subject to the qualifications made herein, and affirm the trial court's denial of the motion to vacate filed by Donte Lamar Jones.

I.

In 2000, Jones and an accomplice, both armed and wearing masks, robbed two night clerks at a convenience store. They ordered both clerks to lie down on the floor. After his accomplice took roughly $35 from the cash register and the two were fleeing the scene, Jones shot one of the clerks in the back as she laid on the floor. The following day, Jones stated, "I think I paralyzed the bitch." J.A. at 9-10. In fact, however, Jones's gunshot wound had killed her. At the time of the offense, Jones was a few months away from his 18th birthday and was on supervised juvenile probation for a felony offense committed when he was 15 years old.

After his arrest, Jones entered an Alford guilty plea to capital murder and several related charges. He executed a plea agreement stipulating that he would receive a life sentence "without the possibility of parole" on the capital murder charge and a term of years to be determined by the court on the remaining charges. Id. at 45. The plea agreement also stipulated that Jones agreed "to waive any and all rights of appeal with regard to any substantive or procedural issue involved in this prosecution." Id. at 44.

The trial court held a sentencing hearing and received a presentence report from a probation officer. The court imposed the life sentence pursuant to the plea agreement, as well as a 68-year term of incarceration on the remaining 10 felony charges. The sentencing order concluded: "TOTAL SENTENCE IMPOSED: LIFE + 68 YEARS" followed by "TOTAL SENTENCE SUSPENDED: NONE." Id. at 53.

After serving 12 years of his sentence, Jones filed a motion to vacate his life sentence in the trial court, claiming that it violated the principles articulated in Miller v. Alabama , 567 U.S. ----, 132 S.Ct. 2455 , 183 L.Ed.2d 407 (2012), which was issued by the United States Supreme Court 11 years after his convictions. In Miller , two juvenile defendants received mandatory life sentences without the possibility of parole. Under applicable law, the state sentencing courts had no power to suspend in whole or in part either of the two mandatory life sentences. See Ala. Code § 15-22-50 ("The court shall have no power to suspend the execution of sentence imposed upon any [convicted] person ... whose punishment is fixed at death or imprisonment in the penitentiary for more than 15 years."); 1

*708 Ark. Code Ann. § 5-4-104 (e)(1)(A)(i) ("The court shall not suspend imposition of sentence as to a term of imprisonment nor place the defendant on probation for ... [c]apital murder."). 2

Miller held that "a judge or jury must have the opportunity to consider mitigating circumstances before imposing the harshest possible penalty for juveniles." Miller , 567 U.S. at ----, 132 S.Ct. at 2475 (emphasis added). A "mandatory sentencing" scheme that eliminates this opportunity, Miller concluded, could be constitutional only if at some later date the prisoner is afforded the " possibility of parole"-not the guarantee of it. Id. (emphasis added).

Miller was quite clear about what it meant by a mandatory sentence: "Such mandatory penalties, by their nature, preclude a sentencer from taking account of an offender's age and the wealth of characteristics and circumstances attendant to it." Id. at ----, 132 S.Ct. at 2467 (emphasis added). Miller thus concluded that, "[b]y making youth (and all that accompanies it) irrelevant" to imprisonment for life without parole, mandatory, life-without-parole sentences for juveniles violate the Eighth Amendment. Id. at ----, 132 S.Ct. at 2469 . Underlying this holding was the necessary premise that it could only apply to an actual, not a suspended, life-without-parole sentence imposed upon a juvenile offender because only the former, not the latter, would involve "condemning him or her to die in prison." Montgomery , 577 U.S. at ----, 136 S.Ct. at 726 (summarizing Miller ).

Relying on Miller , Jones's motion before the trial court expressly stated that it "only deal[t] with the Capital Murder charge." J.A. at 56. His motion also proposed an "alternative option" to his request for vacatur of the life sentence. Id. at 61. "Pursuant to Code § 19.2-303," Jones argued, the trial court " 'may suspend imposition of sentence or suspend the sentence in whole or part' on the Capital Murder conviction." Id. (quoting Code § 19.2-303 ); see also id. at 55-56. The motion to vacate concluded with this prayer for relief: "Suspend the mandatory life sentence without parole or declare Mr. Jones's conviction for Capital Murder void in the absence of any legal punishment the Court can lawfully impose." Id. at 62.

The motion to vacate, however, made no factual proffer and left the question whether to hold an evidentiary hearing entirely within the discretion of the trial court. The motion requested that the trial court "grant Mr. Jones an evidentiary hearing on the claims presented in this Motion" only "if the Court determine[d] there [was] a need for further factual development." Id. The trial court denied the motion "after review of the case file and the defendant's motion," observing that Jones presented "nothing new in mitigation of the offense." Id. at 65.

On appeal of the trial court's denial of the motion to vacate, we "h[e]ld that because the trial court ha[d] the ability under Code § 19.2-303 to suspend part or all of the life sentence ..., the sentencing scheme applicable to Jones's conviction was not a mandatory life without the possibility of parole scheme." Jones I , 288 Va. at 477 , 763 S.E.2d at 823 . Thus, we reasoned, Miller was inapplicable to the Virginia sentencing law at issue "even if it is to be applied retroactively." Id. at 481, 763 S.E.2d at 826 .

We came to this conclusion because Virginia law does not preclude a sentencing court from considering mitigating circumstances, whether they be age or anything else. To be sure, sentencing statutes specifically authorize a trial court to do so, even to the point of suspending entirely a life sentence so that the offender never spends a day in prison. See Code § 19.2-303. Nor does Virginia law make "youth (and all that accompanies it) irrelevant" to the court's sentencing discretion. Miller , 567 U.S. at ----, 132 S.Ct. at 2469 . Nothing in the statutory suspension power suggests that the offender's youth should be legally irrelevant to the exercise of the sentencing court's discretion.

*709 Dissatisfied with our reasoning, Jones filed a petition for certiorari to the United States Supreme Court arguing that he never truly had the mitigation opportunity. Despite the unqualified text of Code § 19.2-303 authorizing the power of suspension and our unanimous opinion applying it to his case, Jones argued that we were plainly wrong: "Because life without parole is the only sentence (other than death) authorized under Virginia's capital murder statute, the Virginia Supreme Court's characterization of that sentence as 'not mandatory' rings hollow." Pet. Cert. at 9 n.2 (emphasis in original).

Jones's petition for certiorari did not call attention to conflicting prior precedent or suggest that we had abruptly changed course in established legal doctrine governing the suspension power of a sentencing court. Neither did his petition put forward any legal analysis suggesting that our application of Code § 19.2-303 to life sentences rested upon a flawed statutory interpretation. Instead, he merely argued that the power to suspend a life sentence (even to the point of not serving a day in prison) was an insufficient "opportunity" for the sentencing court to take into account "mitigating circumstances before imposing the harshest possible penalty for juveniles." Miller , 567 U.S. at ----, 132 S.Ct. at 2475 ; see also Pet. Cert. at 13-15.

Before ruling on the merits of Jones's petition, the United States Supreme Court issued Montgomery v. Louisiana , which decided the "question whether Miller 's prohibition on mandatory life without parole for juvenile offenders indeed did announce a new substantive rule that, under the Constitution, must be retroactive." 577 U.S. at ----, 136 S.Ct. at 732. Montgomery held that Miller was retroactive, and thus, juvenile defendants "must be given the opportunity [at the time of sentencing] to show their crime did not reflect irreparable corruption; and, if it did not , their hope for some years of life outside prison walls must be restored" by the possibility of future parole. Id. at ----, 136 S.Ct. at 736-37 (emphases added). 3 Like the sentencing statutes reviewed in Miller , the Louisiana law addressed in Montgomery forbade the sentencing court from suspending in whole or in part the life sentence without parole in capital cases. See La. Stat. Ann. § 14:30 (C)(1) ("If the district attorney seeks a capital verdict, the offender shall be punished by death or life imprisonment at hard labor without benefit of parole, probation, or suspension of sentence ...." (emphasis added)).

The holding in Montgomery tracked that in Miller : State law cannot impose "mandatory" penalties that make "youth (and all that accompanies it) irrelevant" to the decision to imprison a juvenile for life without parole. Montgomery , 577 U.S. at ----, 136 S.Ct. at 726 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2469 ). Mandatory sentencing statutes, "by their nature, preclude a sentencer from taking account of an offender's age and the wealth of characteristics and circumstances attendant to it." Miller , 567 U.S. at ----, 132 S.Ct. at 2467 (emphasis added). It was this legal preclusion that Miller and Montgomery deemed unconstitutional. If a mandatory sentencing statute has that effect, it can survive constitutional scrutiny only if the "possibility of parole," id. at ----, 132 S.Ct. at 2469 , gives the prisoner a "hope" that he will not "die in prison," Montgomery , 577 U.S. at ----, 136 S.Ct. at 736-37.

Roughly 40 petitions for certiorari implicating Miller were before the United States Supreme Court at the same time as Jones's petition. The Court decided them all on the same day and issued a two-sentence order in each case, stating as applicable, "Petition for writ of certiorari granted. Judgment vacated, and case remanded ... for further consideration in light of Montgomery v. Louisiana , 577 U.S. ----, 136 S.Ct. 718 , 193 L.Ed.2d 599 (2016)." Jones v. Virginia , --- U.S. ----, 136 S.Ct. 1358 , 1358, 194 L.Ed.2d 340 (2016) (per curiam). 4

*710 In each of these orders, Justices Thomas and Alito filed a concurring statement explaining the Court's precise holding:

The Court has held the petition in this and many other cases pending the decision in Montgomery v. Louisiana , 577 U.S. ----, 136 S.Ct. 718 , 193 L.Ed.2d 599 (2016). In holding this petition and now vacating and remanding the judgment below, the Court has not assessed whether petitioner's asserted entitlement to retroactive relief "is properly presented in the case." Id. at ----, 136 S.Ct. at 732, 193 L.Ed.2d at 617 .

Jones v. Virginia , --- U.S. ----, 136 S.Ct. 1358 , 1358, 194 L.Ed.2d 340 (2016) (Thomas, J., concurring). The concurrence clarified, without any suggestion to the contrary in the majority's form order, what the remand order did not do:

On remand, courts should understand that the Court's disposition of this petition does not reflect any view regarding petitioner's entitlement to relief. The Court's disposition does not, for example, address whether an adequate and independent state ground bars relief, whether petitioner forfeited or waived any entitlement to relief (by, for example, entering into a plea agreement waiving any entitlement to relief), or whether petitioner's sentence actually qualifies as a mandatory life without parole sentence .

Id. (emphases added).

II.

On remand, Jones seeks a vacatur of his life sentence on several interdependent grounds. Under his view of Miller and Montgomery , Jones contends that we must order the trial court to resentence him to a specific term of years (not life) and to ensure that the term of incarceration is not long enough to be the "functional equivalent of a life sentence." Appellant's Remand Reply Br. at 9, 14. We find none of Jones's arguments persuasive. 5

*711 A.

Jones first argues that we should hold-contrary to Jones I -that his life sentence was a mandatory life sentence in violation of Miller . We decline the invitation to do so.

1.

As Jones I observed, the General Assembly has carefully distinguished between "mandatory minimum sentence[s]" that cannot be suspended and non-mandatory minimum sentences that can be. Jones I , 288 Va. at 479-80 , 763 S.E.2d at 825 . 6 "Only where the General Assembly has prescribed a mandatory minimum sentence imposing an inflexible penalty has it 'divested trial judges of all discretion respecting punishment.' " Id. at 479, 763 S.E.2d at 825 (quoting In re: Commonwealth , 229 Va. 159 , 163, 326 S.E.2d 695 , 697 (1985) ). 7 What is true for term-of-years sentences is just as true for life sentences. Unless a statute precludes the exercise of such discretion, Virginia trial courts can-and do-suspend life sentences. 8 Jones has offered no persuasive reason to us, either before or after Jones I , in support of the *712 thesis that life sentences are exempt from the judicial power of suspension. Consequently, we reaffirm Jones I 's holding that, under Virginia law, "the trial court ha[d] the ability under Code § 19.2-303 to suspend part or all of the life sentence," and thus, "the sentencing scheme applicable to Jones's conviction was not a mandatory life without the possibility of parole scheme." 288 Va. at 477 , 763 S.E.2d at 823 .

2.

Whether a state sentencing statute authorizes or precludes judicial discretion is a matter solely governed by state law. In the companion case addressed in the Miller opinion, the United States Supreme Court reaffirmed that whether a state sentencing statute is mandatory (that is, precludes the possibility of mitigation of the prescribed punishment) is a decision to be made by "state courts." Miller , 567 U.S. at ---- n.2, 132 S.Ct. at 2462 n.2. When a state court treats a sentencing statute as "mandatory," the United States Supreme Court will "abide by that interpretation of state law." Id. 9

It follows that where, as here, a State's highest court treats a sentencing statute as non-mandatory (that is, provides an opportunity to seek mitigation of the prescribed punishment), the United States Supreme Court would abide by that interpretation of state law. We thus infer no disapproval in either Miller or Montgomery of our interpretation of Virginia's sentencing statutes. Nor do we believe it proper to read into the remand order "any view" on the question of "whether petitioner's sentence actually qualified as a mandatory life without parole sentence." Jones , --- U.S. ----, 136 S.Ct. at 1358 (Thomas, J., concurring).

B.

Jones frames his next argument in equally absolute, but flawed, terms. " Montgomery confirmed," Jones argues, "that Miller requires a hearing where youth and its attendant characteristics are considered as sentencing factors in order to separate those juveniles who may be sentenced to life without parole from those who may not. Virginia law does not provide for such hearing." Appellant's Remand Br. at 8. We disagree on several levels with this reasoning.

1.

As Montgomery explained, the mandatory, life-without-parole sentence under Louisiana law violated Miller because it gave the juvenile defendant "no opportunity to present mitigation evidence to justify a less severe sentence." Montgomery , 577 U.S. at ----, 136 S.Ct. at 726 (emphasis added). 10 Like the *713 sentencing statutes in Miller , the Louisiana statute imposing a sentence of life imprisonment on Montgomery was not subject to suspension in whole or in part by the sentencing court. See La. Stat. Ann. § 14:30 (C)(1). Thus, as was the case in Miller , the state sentencing law at issue in Montgomery precluded the juvenile defendant from either seeking mitigation of his sentence or offering any evidence in support of such a request.

In Virginia, however, a criminal defendant has a statutorily provided opportunity to present mitigation evidence at his sentencing hearing. 11 If relevant and admissible, evidence in mitigation of punishment can be presented unless the punishment imposed is a mandatory, fixed sentence that cannot be varied in any degree. 12 This principle is no less true in Jones's case than in any other criminal case. Moreover, Virginia's sentencing laws-unlike the laws found unconstitutional in Miller -authorized the sentencing court to suspend Jones's life sentence in whole or in part. Nothing in Virginia law denied Jones the opportunity to request a suspension and to present evidence of his "youth and attendant characteristics," Montgomery , 577 U.S. at ----, 136 S.Ct. at 734, in support of a suspended sentence. Jones was never denied this constitutionally required opportunity. For the certainty of a plea agreement, he simply chose not to exercise it.

2.

Jones's argument to the contrary seems oblivious to the fact that he entered into a plea agreement in which he stipulated to a life sentence "without the possibility of parole" on the capital murder charge. See J.A. at 45. 13 He also agreed "to waive any and all rights of appeal with regard to any substantive or procedural issue involved in this prosecution." Id. at 44. Consistent with the prevailing view, see *714 7 Wayne R. LaFave et al., Criminal Procedure § 27.5(c), at 86 (4th ed. 2015) (observing that "[m]ost courts, including all twelve federal courts of appeals with criminal jurisdiction, uphold appeal waivers"), 14 Virginia has long held that a criminal defendant can waive "his appeal of right" if the circumstances demonstrate "his decision to waive his appeal was made knowingly, voluntarily, and intelligently," Davidson v. Commonwealth , 244 Va. 129 , 131, 419 S.E.2d 656 , 658 (1992) (accepting waiver of right to appeal capital conviction but applying a specific statutory exception mandating limited appellate review of all death sentences). 15

In short, Jones was never denied the opportunity to offer mitigation evidence of his "youth and attendant characteristics," Montgomery , 577 U.S. at ----, 136 S.Ct. at 734, in support of a suspended sentence. He affirmatively waived that right as part of a negotiated plea agreement. 24 Daniel R. Coquillette et al., Moore's Federal Practice § 611.08 [4][a], at 611-84 (Matthew Bender 3d ed. 2016) ("There is a 'presumption that legal rights generally, and evidentiary rights specifically, are subject to waiver by voluntary agreement of the parties.' A plea of guilty entered on the competent advice of counsel will be held to waive all constitutional objections to the conviction ... unless the jurisdiction in which the case arises specifically permits appeals on those issues, even after a plea of guilty." (footnote omitted) (quoting United States v. Mezzanatto , 513 U.S. 196 , 203, 115 S.Ct. 797 , 130 L.Ed.2d 697 (1995) )). He also expressly waived his right to challenge his sentence on direct appeal and, a fortiori , on collateral attack. His present argument thus amounts to a challenge that he was never afforded an opportunity to present evidence that he never offered and to request relief that he never sought.

Putting aside for the moment Jones's void-ab-initio contention, which we address in Part II(C) of this opinion, we fail to see how his Miller - Montgomery claim can be immunized from waiver principles that govern all other constitutional challenges. See, e.g. , McDonald v. Commonwealth , 274 Va. 249 , 255, 645 S.E.2d 918 , 921 (2007) (holding that appellant had waived his facial constitutional challenge under Rule 5:25); Powell v. Commonwealth , 182 Va. 327 , 336, 28 S.E.2d 687 , 691 (1944) (affirming express waiver of various constitutional rights, including rights to counsel, to trial by jury, to sequester the jury, and to speedy trial); Brown v. Epps , 91 Va. 726 , 737, 21 S.E. 119 , 122 (1895) (observing, in a Sixth Amendment challenge, that it is "beyond a doubt" that "a prisoner may waive many of his constitutional rights").

Nothing in Montgomery undermines settled waiver principles. Nor does the remand order do so. As the concurring Justices pointed out, the remand order disclaims any position whatsoever on "whether an adequate and independent state ground bars relief" or " whether petitioner forfeited or waived any entitlement to relief (by, for example, entering into a plea agreement waiving any entitlement to relief)." Jones , --- U.S. ----, 136 S.Ct. at 1358 (Thomas, J., concurring) (emphasis added). We are thus free to employ traditional waiver principles *715 applicable to plea agreements. Those principles, in our opinion, are dispositive in this case.

C.

Jones next addresses the fact that, at his original sentencing, he never asked for a mitigation hearing, never proffered any mitigation evidence, expressly stipulated to his life sentence as a condition of his plea agreement, and affirmatively waived any appellate challenge to his conviction or sentence. That is of no concern, Jones claims, because his sentence was void ab initio-a doctrinal "royal flush" that outranks any lesser hands of procedural default, estoppel, or even judicial stipulations.

This assertion, however, presupposes that the trial court violated the Eighth Amendment by accepting Jones's Alford guilty plea and by imposing the life sentence Jones agreed to in the plea agreement. As Montgomery explained, a mandatory, life-without-parole sentence violates Miller when it provides the juvenile defendant "no opportunity to present mitigation evidence to justify a less severe sentence." Montgomery , 577 U.S. at ----, 136 S.Ct. at 726 (emphasis added). Under Virginia law, Jones had such an opportunity. See supra Part II.B. He simply failed to exercise it.

But even if, as Jones's logic implies, the trial court-over a decade ago-had a constitutional duty to force Jones to violate his plea agreement by requesting a partial or complete suspension of his stipulated sentence and then, whether requested or not, to order Jones to present mitigation evidence in support of an unrequested suspension, we would not hold that such a violation renders his sentence void ab initio. Nothing in Virginia or federal law compels us to do so, and we can think of no good reason why we should.

1.

In this case, as in most, whether an alleged error by a trial court renders its order void ab initio or merely voidable turns on the subtle, but crucial, distinction deeply embedded in Virginia law "between a court lacking jurisdiction to act upon a matter and the court, while properly having jurisdiction, nonetheless erring in its judgment." Kelley v. Stamos , 285 Va. 68 , 75, 737 S.E.2d 218 , 221-22 (2013). "In this context, a matter is void either because it has been null from the beginning (void ab initio) or because it is declared null although seemingly valid until that point in time (voidable)." Nelson v. Warden , 262 Va. 276 , 285, 552 S.E.2d 73 , 77-78 (2001). Significantly, "very few judgments are totally void and subject to attack at any time." Costello, supra note 11, § 62.12, at 1087.

This distinction guards against the improper elevation of a court's failure "to comply with the requirements for exercising its authority to the same level of gravity as a lack of subject matter jurisdiction." Nelson , 262 Va. at 281 , 552 S.E.2d at 75 ; see also Burrell v. Commonwealth , 283 Va. 474 , 480, 722 S.E.2d 272 , 275 (2012). In this sense, a trial court has "jurisdiction to err" just as an appellate court has jurisdiction to correct such errors. Parrish v. Jessee , 250 Va. 514 , 521, 464 S.E.2d 141 , 146 (1995) (citation omitted).

As subtle as this distinction may be, it has a sharp impact on criminal cases. If a criminal defendant fails to preserve an issue in the trial court, he can waive claimed violations of his constitutional right to be free of unreasonable searches and seizures under the Fourth Amendment, 16 of his Miranda rights under the Fifth Amendment, 17 of his *716 confrontation and speedy trial rights under the Sixth Amendment, 18 and even of his right to a jury trial under the Sixth Amendment. 19 None of these claims, even if conceded to be valid, renders the underlying judgment void ab initio. Procedural default principles, including Rules 5:25 and 5A:18, still apply, as do traditional finality principles protecting judgments no longer within the trial court's active jurisdiction. See supra notes 16-19 and accompanying text. 20

Jones contends that unlawful sentencing orders are different. He is right but not in the way he supposes. The jurisdictional power of a Virginia trial court to issue a criminal sentence depends upon the applicable sentencing statutes. See Kelley , 285 Va. at 76 , 737 S.E.2d at 222 (acknowledging that "the Constitution of Virginia authorized the General Assembly to confer power upon the circuit courts" and that "[t]he General Assembly prescribed the applicable punishments for criminal offenses"). 21

*717 There is no inherent judicial power to fix terms of imprisonment. See Hernandez v. Commonwealth , 281 Va. 222 , 225, 707 S.E.2d 273 , 275 (2011) (explaining that a Virginia trial court "has no inherent authority to depart from the range of punishment legislatively prescribed"). Thus, when a trial court imposes a sentence outside the range set by the legislature, the court's sentencing order-at least to that extent-is void ab initio because the court has no jurisdiction to do so. See, e.g. , Rawls v. Commonwealth , 278 Va. 213 , 221, 683 S.E.2d 544 , 549 (2009) ; Royster v. Smith , 195 Va. 228 , 235, 77 S.E.2d 855 , 858 (1953) (noting that a sentence is "void" only if "the court rendering it" did not have "the power to pronounce" it).

We clarified these points in Rawls . "Prior to Rawls , our jurisprudence had not been uniform in determining whether a defendant who received an improper sentence was entitled to a new sentencing hearing." Grafmuller v. Commonwealth , 290 Va. 525 , 529, 778 S.E.2d 114 , 116 (2015). "Thus, in Rawls we adopted a bright-line rule that: 'a sentence imposed in violation of a prescribed statutory range of punishment is void ab initio because the character of the judgment was not such as the Court had the power to render.' " Id. (quoting Rawls , 278 Va. at 221 , 683 S.E.2d at 549 ). In this context, a sentencing order is void ab initio only if the trial court lacked "the power to render" it. Id. ; accord Burrell , 283 Va. at 480 , 722 S.E.2d at 275 (recognizing an order as void ab initio when the trial court had no "power to render" it). 22

We respectfully disagree with the dissent's assertion that Virginia law supports Jones's use of a motion to vacate in this context. See post at ---- - ----. The dissent offers only one authority in support of that assertion: Loving v. Commonwealth , 206 Va. 924 , 925, 147 S.E.2d 78 , 79 (1966). That decision, however, was famously reversed by Loving v. Virginia , 388 U.S. 1 , 87 S.Ct. 1817 , 18 L.Ed.2d 1010 (1967), and neither our opinion nor the United States Supreme Court opinion reversing it had a single line addressing the proper role of motions to vacate under Virginia law. Furthermore, the issue was not briefed, argued, or decided.

Under Virginia law, stare decisis does not "foreclose inquiry" into an issue not previously "raised, discussed, or decided." Chesapeake Hosp. Auth. v. Commonwealth , 262 Va. 551 , 560, 554 S.E.2d 55 , 59 (2001) ; see also Selected Risks Ins. v. Dean , 233 Va. 260 , 265, 355 S.E.2d 579 , 581 (1987) (recognizing that precedent accorded stare decisis weight is contingent upon "full deliberation upon the issue by the court"); Moses v. Commonwealth , 45 Va.App. 357 , 364 n.4, 611 S.E.2d 607 , 610 n.4 (2005) (en banc). For stare decisis to apply, "the court must have decided the issue for which the precedent is claimed; it cannot merely have discussed it in dictum, ignored it, or assumed the point without ruling on it." Bryan A. Garner, et al., The Law of Judicial Precedent 6 (2016).

We made this very point about motions to vacate in Hirschkop v. Commonwealth , 209 Va. 678 , 166 S.E.2d 322 (1969). Claiming Loving as supportive precedent, the criminal defendant in Hirschkop filed a motion to vacate his final conviction and sentencing order. Id. at 681-82, 166 S.E.2d at 324 . We found several reasons why the motion to vacate was improper. One was that our Loving decision had no precedential value on the motion-to-vacate issue because "it does not appear from the opinion in Loving that the question of jurisdiction was raised or that *718 any motion to dismiss was made by the Commonwealth. Certainly Loving does not stand for the proposition that any judgment which has become final can be vacated." Id. We continue to hold this view. 23

2.

Jones claims that Montgomery 's retroactivity holding requires, as a matter of federal law, that we treat a Miller violation as rendering the sentence void ab initio. After all, Jones points out, Montgomery uses the term "void" in various places in the opinion to describe unconstitutional convictions and sentences. What Jones misses, however, is that neither Montgomery nor any decision upon which it relies holds that such violations render a criminal conviction or sentence void ab initio . Jones's argument fails to appreciate the crucial nature of this distinction.

"When a new substantive rule of constitutional law is established," the Supreme Court explained, "this Court is careful to limit the scope of any attendant procedural requirement to avoid intruding more than necessary upon the States' sovereign administration of their criminal justice systems." Montgomery , 577 U.S. at ----, 1336 S.Ct. at 735. By using the term "void," Montgomery merely said what has been said for over a century. Certain types of constitutional errors render convictions "void," i.e., voidable until declared void, and thus subject to collateral attack in federal habeas proceedings-a precedential anchor securely set in Ex parte Siebold , 100 U.S. 371 , 376-77, 25 L.Ed. 717 (1880).

This voidness principle was introduced by Ex parte Siebold "[i]n support of its holding that a conviction obtained under an unconstitutional law warrants habeas relief ." Montgomery , 577 U.S. at ----, 136 S.Ct. at 731 (emphasis added) (quoting Ex parte Siebold , 100 U.S. at 376-77 ). 24 This conclusion, Montgomery held, also applies to state habeas review, but only to the extent that the state collateral-review proceeding "is open to a claim controlled by federal law" 25 and the "claim is properly presented in the case." Id. at ----, 136 S.Ct. at 731-32. Those last two caveats are important.

The law of habeas corpus in this Commonwealth "is open to a claim controlled *719 by federal law." Id. at ----, 136 S.Ct. at 731 ; see, e.g. , Griffin v. Cunningham , 205 Va. 349 , 355, 136 S.E.2d 840 , 845 (1964) (noting that "[i]t is well settled that the deprivation of a constitutional right of a prisoner may be raised by habeas corpus"); Lacey v. Palmer , 93 Va. 159 , 172, 24 S.E. 930 , 934 (1896) (evaluating statute under which habeas petitioner was convicted for validity under Commerce Clause of United States Constitution). We routinely adjudicate federal constitutional claims that are "properly presented," Montgomery , 577 U.S. at ----, 136 S.Ct. at 732, in our habeas proceedings.

The case before us now, however, is not a habeas corpus proceeding. Jones filed a motion to vacate in the sentencing court 12 years after his conviction, claiming that his sentence was cruel and unusual under the Eighth Amendment. There is no precedent under Virginia law for asserting such a claim in a motion to vacate. To be sure, we have never held, nor are we aware of any court that has held, that a motion to vacate (rather than a petition for habeas corpus) is a proper vehicle under Virginia law to challenge a conviction or sentence based solely on a federal constitutional challenge.

If a motion to vacate had the reach that Jones asserts, the multitude of substantive and procedural requirements in our habeas corpus law would be permanently sidelined. See Costello, supra note 11, § 68.2[2], at 1244 (describing Virginia habeas provisions as "impos[ing] strict limitations on the time within which petitions ... may be filed" and highlighting other procedural requirements). Statutes of limitation, as well as rules governing successive petitions, jurisdiction of courts to hear such claims, procedural defaults, service of process-none of these requirements would be relevant if a motion to vacate could be used in place of a petition for habeas corpus.

Virginia law does not permit a motion to vacate that is filed in a trial court long after the court lost active jurisdiction over the criminal case to serve as an all-purpose pleading for collateral review of criminal convictions. Just as habeas corpus cannot be used as a substitute for a direct appeal, 5 Ronald J. Bacigal, Virginia Practice Series: Criminal Procedure § 21:8, at 669 (2015-2016 ed.), a motion to vacate cannot be used as a substitute for a habeas corpus petition. Except for the narrow band of situations in which we have recognized the efficacy of motions to vacate to remedy orders that are void ab initio, constitutional challenges like the one Jones asserts must be properly presented in a timely petition for habeas corpus.

To put the point in the framework of Montgomery , a motion to vacate filed in a trial court that has long since lost active jurisdiction over the case, see Rule 1:1; Costello, supra note 11, § 62.12, at 1087, is not a state collateral-review proceeding "open to a claim controlled by federal law" and does not involve a claim that is "properly presented" by a motion to vacate, Montgomery , 577 U.S. at ----, 136 S.Ct. at 731-32. Thus, even if the trial court (retroactively) violated Miller by imposing the stipulated life-without-parole sentence on Jones, the sentencing order would not be void ab initio and, thus, subject to annulment by a motion to vacate filed many years after the trial court lost active jurisdiction over the criminal case. Instead, the putative Miller violation, if proven, would render the sentence merely voidable-that is, vulnerable to being judicially declared void-upon review either via direct appeal timely made or in a habeas corpus proceeding.

To be sure, Montgomery itself implicitly refutes Jones's assumption that a sentencing order in violation of Miller must be deemed void ab initio. Montgomery held that "[a] State may remedy a Miller violation by permitting juvenile homicide offenders to be considered for parole, rather than by resentencing them." Montgomery , 577 U.S. at ----, 136 S.Ct. at 736. How could that remedy be appropriate for a sentencing order deemed void ab initio, given that it is a "complete nullity" which, in the eyes of the law, does not exist at all? Grafmuller , 290 Va. at 528 n.1, 778 S.E.2d at 115 n.1 (citation omitted); see also Griffith v. Frazier , 12 U.S. (8 Cranch) 9, 28, 3 L.Ed. 471 (1814) (noting that an appointment that is "void ab initio" is "absolutely void" and thus renders all subsequent acts of the appointee voidable). A nonexistent nullity cannot be resurrected by *720 some future, uncertain event. In this respect, the Montgomery remedy is irreconcilable with the dissent's claim that a violation of Miller ipso facto renders the sentence void ab initio.

While the dissent correctly points out that nowhere does Montgomery specifically state that habeas relief is the sole remedy available to address an unconstitutional sentence, that point is directed to the wrong question. The proper mode of collaterally attacking a criminal conviction and sentence in a state court depends on state law not federal law. See Danforth v. Minnesota , 552 U.S. 264 , 288, 128 S.Ct. 1029 , 169 L.Ed.2d 859 (2008) ("[T]he remedy a state court chooses to provide its citizens for violations of the Federal Constitution is primarily a question of state law." (citation omitted)); Pace v. DiGuglielmo , 544 U.S. 408 , 414, 125 S.Ct. 1807 , 161 L.Ed.2d 669 (2005) (affirming procedural timelines for postconviction relief under state law and holding that "[w]hen a postconviction petition is untimely under state law, 'that [is] the end of the matter' for purposes of [federal habeas review]" (citation omitted)); O'Sullivan v. Boerckel , 526 U.S. 838 , 847-48, 119 S.Ct. 1728 , 144 L.Ed.2d 1 (1999) (noting that "there is nothing in the exhaustion doctrine requiring federal courts to ignore a state law or rule providing that a given procedure is not available"). We thus would not expect Montgomery to say anything about the exclusivity of state habeas relief in Virginia courts.

What Montgomery did say was that a life-without-parole sentence invalidated by Miller must be corrected in any state collateral-review proceeding that "is open to a claim controlled by federal law," assuming that the "claim is properly presented in the case." Montgomery , 577 U.S. at ----, 136 S.Ct. at 731-32. In Virginia, a Miller violation can be addressed on direct review or in a habeas proceeding. Because the violation, if proven, does not render the sentence void ab initio but merely voidable, it cannot be addressed by a motion to vacate filed years after the sentence became final. See Costello, supra note 11, § 62.12, at 1087 (noting that "a voidable judgment may be attacked only while the trial court that rendered it still has jurisdiction").

The dissent appears to believe that every substantive constitutional rule held to be retroactive, when violated, renders the conviction or sentence void ab initio. See post at ---- (referring to this as the "general approach"). However, only one case cited by the dissent uses the "void ab initio" expression, United States v. Johnson , 457 U.S. 537 , 550, 102 S.Ct. 2579 , 73 L.Ed.2d 202 (1982), and that case, like Siebold , addressed only a federal court's retroactive use of a new substantive rule in the context of federal habeas law.

Even in that context, Johnson synthesized earlier precedent that applied the "notion" of "void ab initio" judgments (an after-the-fact characterization, given that none of those cases used that term) only to situations in which a federal habeas court applies a constitutional guarantee that either "immunizes a defendant's conduct from punishment" or prevents a "trial from taking place at all." Id. at 550-51 , 102 S.Ct. 2579 (citing cases barring punishment of a defendant invoking the Fifth Amendment and cases barring prosecutions violative of the Double Jeopardy Clause); see also Mackey v. United States , 401 U.S. 667 , 692-93 & nn.7-8, 91 S.Ct. 1160 , 28 L.Ed.2d 404 (1971) (Harlan, J., concurring) (observing that habeas review historically applied only to cases in which the challenged conviction involved "conduct beyond the power of the criminal law-making authority to proscribe" in a way that "punish[ed] for conduct that is constitutionally protected").

Nothing in the void-ab-initio "notion" in Johnson sought to dictate how state law governs the scope and availability of collateral remedies or to mandate that violations of retroactive substantive rules be treated as defects in subject-matter jurisdiction for purposes of motions to vacate filed in state courts. The "general approach" referred to by the dissent, post at ----, is nothing more than the unremarkable fact that habeas courts applying substantive rules retroactively have authority to declare violative convictions or sentences to be void and to order appropriate relief. None of these cases hold *721 that state courts must permit such challenges to go forward outside the parameters of a properly filed habeas petition.

D.

Finally, our colleagues in dissent raise several points about the interplay between Miller and Montgomery that go considerably beyond Jones's position in this appeal. We respect these views and offer a brief explanation as to why we cannot agree with them.

1.

First, the dissent adopts an "expanded" analysis of Montgomery , post at ----, contending that Montgomery "require[s] a Miller hearing before a juvenile offender can be sentenced to life without parole, regardless of whether the sentence is mandatory or discretionary ," pos t at ---- (emphasis added). This fulsome expansion, however, does not come from Montgomery 's expansive interpretation of Miller . It comes from the dissent's expansive interpretation of Montgomery . As the dissent candidly acknowledges: "Even if Miller and Montgomery did not expressly require the facts surrounding Jones's sentencing be reconsidered, I would hold that juveniles in Virginia facing a sentence of life without parole should be afforded a Miller hearing, for the reasons stated in Montgomery ." Post at ---- n.11.

We view the debate through a different prism. "We are duty bound," of course, "to enforce the Eighth Amendment consistent with the holdings of the highest court in the land." Vasquez v. Commonwealth , 291 Va. 232 , 242, 781 S.E.2d 920 , 926 (2016). However, our "duty to follow binding precedent is fixed upon case-specific holdings, not general expressions in an opinion that exceed the scope of a specific holding." Id. We believe "the very concept of binding precedent presupposes that courts are 'bound by holdings, not language.' " Id. at 242-43 , 781 S.E.2d at 926 (quoting Alexander v. Sandoval , 532 U.S. 275 , 282, 121 S.Ct. 1511 , 149 L.Ed.2d 517 (2001) ). This limiting principle exists because "words [in judicial] opinions are to be read in the light of the facts of the case under discussion." Armour & Co. v. Wantock , 323 U.S. 126 , 133, 65 S.Ct. 165 , 89 L.Ed. 118 (1944) ; see also Ameur v. Gates , 759 F.3d 317 , 324 (4th Cir. 2014).

As we recently stated, Miller "held that 'mandatory life-without-parole sentences for juveniles violate the Eighth Amendment.' " Vasquez , 291 Va. at 240-41 , 781 S.E.2d at 925 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2464 ). The main "question" for decision in Montgomery was equally clear: "whether Miller 's prohibition on mandatory life without parole for juvenile offenders" should be applied retroactively. Montgomery , 577 U.S. at ----, 136 S.Ct. at 732. Both cases addressed mandatory life sentences without possibility of parole. The dissent's proposed expansion of these holdings to non-mandatory life sentences-based entirely on dicta in Montgomery -requires attenuated reasoning uninfluenced by stare decisis. 26

We acknowledge that, perhaps, some post- Montgomery opinion from the United States Supreme Court might expand the Eighth Amendment to "mandatory or discretionary" juvenile life sentences generally, as the dissent proposes, with the evident purpose of moving the bar so high that all life sentences for convicted juvenile murderers and rapists, or juveniles convicted of other similarly serious crimes, eventually will be judicially deemed cruel and unusual punishment as a matter of law. The question before us, however, "is what the law is now, not what it may be in the future. We are not in the speculative business of plotting the future course of federal precedents." Clark v. Virginia Dep't of State Police , 292 Va. ----, ----, 793 S.E.2d 1 , 7 (2016) ; cf. Garcia v. Texas , 564 U.S. 940 , 941, 131 S.Ct. 2866 , 180 L.Ed.2d 872 (2011)

*722 ("Our task is to rule on what the law is, not what it might eventually be.").

2.

Second, the dissent sees our analysis as a logical conundrum. Miller cannot be understood, the dissent suggests, to apply only to a mandatory sentence of life without possibility of parole. This "interpretation of Miller and Montgomery ," the dissent states, "renders the requirement that a sentencing court hold a hearing and 'consider a juvenile offender's youth and attendant characteristics' contingent upon whether the sentence to be imposed is mandatory rather than discretionary." Post at ----. Continuing this syllogism, the dissent adds, "[b]y that same logic, the majority concludes that a sentencing court may, but is not constitutionally required to, consider those factors if the sentence is discretionary." Post at ---- - ----.

We do not endorse this logic or attempt to defend it. Our understanding of Miller is different-and far clearer-than the thesis criticized by the dissent. Under our view, the whole point of Miller was to preclude a sentencing scheme from imposing a mandatory life-without-parole sentence because doing so would eliminate the sentencing court's discretion to impose anything less than that. Only in those nondiscretionary sentencing schemes are the offender's "youth and attendant characteristics," Montgomery , 577 U.S. at ----, 136 S.Ct. at 734, truly irrelevant.

The Miller remedy was to require mandatory life sentences to be accompanied by the possibility of release on parole at some future date. See Miller , 567 U.S. at ----, ----, 132 S.Ct. at 2469, 2474-75 . If that possibility exists, the Miller decision held, there could be no Eighth Amendment violation. Montgomery added another remedy in cases in which no parole possibility exists: an opportunity upon resentencing to conduct an evidentiary hearing on the offender's youth and attendant characteristics. See Montgomery , 577 U.S. at ----, 136 S.Ct. at 736-37.

Those are the only two scenarios: (i) mandatory life-without-parole sentences that can be remedied by the availability of parole and (ii) those for which parole is unavailable and which therefore require remand for discretionary resentencing. Both the Miller and Montgomery remedies presuppose that the original life sentence was mandatory such that no mitigating evidence presented at the original sentencing hearing could have precluded the entry of a mandatory sentencing order "condemning him or her to die in prison." Id. at ----, 136 S.Ct. at 726 (summarizing Miller ). Without this predicate, neither remedy makes sense.

Our dissenting colleagues think that we leave out a third scenario, one in which a purely discretionary sentencing scheme does not require consideration of a juvenile offender's youth and attendant characteristics. Under our approach, the dissent warns, a sentencing court could choose to ignore these factors if the sentence is discretionary.

We respond by pointing out the unrealistic nature of that scenario. We are aware of no statute in the nation that authorizes a sentencing court to use its discretion to impose a life-without-parole punishment on a juvenile but forbids the court from considering the juvenile's "youth and attendant characteristics." Id. at ----, 136 S.Ct. at 734. Nor are we aware of any case-and this is certainly not one-in which a sentencing statute gave the juvenile offender the opportunity to present mitigating evidence but the sentencing court arbitrarily refused to consider it. If there were such a case, we would not need the Eighth Amendment to remedy the obvious error. We would simply hold that the trial court cannot arbitrarily refuse to consider relevant evidence that a statute requires the court to consider. See supra notes 11-12 and accompanying text.

If Montgomery actually held what the dissent supposes, Montgomery would, ironically, not amplify Miller but reverse it. A mere future, potential opportunity to present mitigating evidence at a parole hearing (the remedy authorized by Miller ) would never be enough to satisfy the Eighth Amendment under the dissent's view of Montgomery . That is because, under the dissent's "expanded" analysis of Montgomery , post at ----, only the consideration of mitigation evidence at the time of sentencing or resentencing would suffice-rendering the dissent's reasoning *723 in conflict with basic voidness doctrine. A judicial order that is void ab initio, in the eyes of the law, never existed. It might be possible to resurrect a legally dead ruling (one later declared void) but not one that never existed in the first place (one void ab initio). So, too, if a sentencing order were truly void ab initio, it could not be cured by the hope that, sometime in the distant future, a parole board may release the prisoner from the void-ab-initio sentence.

III.

Having reconsidered Jones I in light of Montgomery , we reinstate our holding in Jones I , subject to the qualifications made herein, and affirm the trial court's denial of Jones's motion to vacate. 27

Affirmed.

JUSTICE POWELL, with whom JUSTICE GOODWYN and JUSTICE MIMS join, dissenting.

When this Court first analyzed Jones's claim, we held as the majority states: that Jones's sentence was not a mandatory life sentence. Jones v. Commonwealth ( Jones I ), 288 Va. 475 , 481, 763 S.E.2d 823 , 826 (2014). I continue to agree with this part of the holding. However, in light of the Supreme Court's recent decision in Montgomery v. Louisiana , 577 U.S. ----, 136 S.Ct. 718 , 193 L.Ed.2d 599 (2016), I can no longer agree with that portion of Jones I where we held that, because Jones's sentence was not a mandatory life sentence, the holding of Miller v. Alabama , 567 U.S. ----, 132 S.Ct. 2455 , 183 L.Ed.2d 407 (2012), does not apply.

In Montgomery , the Supreme Court purposefully clarified and, in my opinion, expanded the holding in Miller , thereby revealing why this Court's previous interpretation of Miller in Jones I was misguided. The Supreme Court's analysis in Montgomery transparently explains why Miller is not limited to juvenile offenders facing or serving mandatory life sentences without parole. Montgomery explicitly requires that a Miller hearing be held before a life sentence without parole may be imposed upon a juvenile offender in order to comply with the strictures of the Eighth Amendment. In the absence of such a hearing, the sentence is in violation of the juvenile's substantive constitutional rights and a court is without jurisdiction to impose a life sentence without parole on a juvenile offender. Therefore, such a sentence is void ab initio. Accordingly, I must respectfully dissent. 1

I. Mandatory Life Sentences

It is important to first address the basis of my opinion that, contrary to the majority opinion, Miller is not limited to mandatory life sentences. As Montgomery makes explicitly clear, Miller "rendered life without parole an unconstitutional penalty for 'a class of defendants because of their status'-that is, juvenile offenders whose crimes reflect the transient immaturity of youth." 577 U.S. at ----, 136 S.Ct. at 734 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2469 ) (emphasis added). See also id. (" Miller ... bar[red] life without parole ... for all but the rarest of juvenile offenders, those whose crimes reflect *724 permanent incorrigibility."). 2 Thus, Montgomery made it clear that the focus of Miller was not that only mandatory life sentences are unconstitutional; rather, it is that the Eighth Amendment requires individualized consideration before a juvenile can be sentenced to life in prison without the possibility of parole.

To ensure such individualized consideration, the Supreme Court expressly mandated that a sentencing court is required to "take into account how children are different, and how those differences counsel against irrevocably sentencing them to a lifetime in prison" before imposing a life sentence upon a juvenile. Miller , 567 U.S. at ----, 132 S.Ct. at 2469 . As the Supreme Court explained in Montgomery , such a hearing is vitally important, as the hearing "gives effect to Miller 's substantive holding that life without parole is an excessive sentence for children whose crimes reflect transient immaturity." 577 U.S. at ----, 136 S.Ct. at 735. This is because "[a] hearing where 'youth and its attendant characteristics' are considered as sentencing factors is necessary to separate those juveniles who may be sentenced to life without parole from those who may not." Id. (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2460 ).

Thus, when viewed through the lens of Montgomery , it is clear that Miller 's discussion of mandatory life sentences was not meant to limit application of the opinion to that instance, but rather to demonstrate how mandatory sentencing schemes foreclose the necessary individualized consideration.

Mandatory life without parole for a juvenile precludes consideration of his chronological age and its hallmark features-among them, immaturity, impetuosity, and failure to appreciate risks and consequences. It prevents taking into account the family and home environment that surrounds him-and from which he cannot usually extricate himself-no matter how brutal or dysfunctional. It neglects the circumstances of the homicide offense, including the extent of his participation in the conduct and the way familial and peer pressures may have affected him. Indeed, it ignores that he might have been charged and convicted of a lesser offense if not for incompetencies associated with youth-for example, his inability to deal with police officers or prosecutors (including on a plea agreement) or his incapacity to assist his own attorneys. And finally, this mandatory punishment disregards the possibility of rehabilitation even when the circumstances most suggest it.

Miller , 567 U.S. at ----, 132 S.Ct. at 2468 (citations omitted).

The majority, however, contends that Montgomery 's express language barring life without parole for all but the rarest of juvenile offenders is not binding upon it because the question before the Court in Montgomery was limited to " 'whether Miller 's prohibition on mandatory life without parole for juvenile offenders' should be applied retroactively." (Quoting Montgomery , 577 U.S. at ----, 136 S.Ct. at 732.) Thus, the majority insists that the precedential holding in Montgomery amounts simply to: Miller is retroactive.

By truncating its analysis, the majority ignores the rationale underlying the Supreme Court's decision. As the Supreme Court explains, the reason Miller is retroactive is because it announced a substantive rule of constitutional law that "rendered life without parole an unconstitutional penalty for 'a class of defendants because of their status'-that is, juvenile offenders whose crimes reflect the transient immaturity of youth." Montgomery , 577 U.S. at ----, 136 S.Ct. at 734 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2469 ).

Further, the majority's interpretation of Miller and Montgomery renders the requirement that a sentencing court hold a hearing and "consider a juvenile offender's youth and attendant characteristics before determining that life without parole is a proportionate sentence" contingent upon whether the sentence to be imposed is mandatory rather *725 than discretionary. Under the majority's interpretation, the factors that serve as the very basis of the substantive holding of Miller are only constitutionally required to be considered when a sentence is mandatory. By that same logic, the majority concludes that a sentencing court may, but is not constitutionally required to, consider those factors if the sentence is discretionary. 3 I find it highly unlikely that the Supreme Court would tolerate any life sentence without parole to be imposed upon a juvenile without consideration of the relevant factors, especially considering that "the penological justifications for life without parole collapse in light of 'the distinctive attributes of youth.' " Montgomery , 577 U.S. at ----, 136 S.Ct. at 734 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2465 ). 4 Yet the majority concludes that this substantive constitutional right does not extend to juveniles facing discretionary life sentences without the possibility of parole. The more logical approach, and the approach I believe is required by Montgomery , would be to require a Miller hearing before a juvenile offender can be sentenced to life without parole, regardless of whether the sentence is mandatory or discretionary, thus affording the same constitutional protections to all juvenile offenders. 5

II. Miller Hearing

Next, the majority takes the position that Miller and Montgomery require only that a defendant have the opportunity to offer mitigation evidence of his youth and attendant circumstances. Notably, the majority reaches this conclusion by relying on language taken from the recitation of the facts in Montgomery . 6 On the other hand, the language used throughout the remainder of the opinion makes it clear that the Supreme Court interpreted Miller as requiring more than just the opportunity to present mitigation evidence. " Miller requires that before sentencing a juvenile to life without parole, the sentencing judge take into account 'how children are different, and how those differences counsel against irrevocably sentencing them to a lifetime in prison.' " Montgomery , 577 U.S. at ----, 136 S.Ct. at 733 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2475 ) (emphasis added). Therefore, "[a] hearing where 'youth and its attendant characteristics' are considered as sentencing factors is necessary to separate those juveniles who may be sentenced to life without parole from those who may not." Id. at 735 (quoting Miller , 567 U.S. at ----, 132 S.Ct. at 2460 ) (emphasis added). Disappointingly, the majority pays no heed to the Supreme Court's *726 clear statement regarding the need for such a hearing.

If, as the majority states, a Miller violation only occurs when a juvenile offender is denied the opportunity to present mitigation evidence, then the entire purpose of a Miller hearing is undermined. The majority's analysis ignores the Supreme Court's admonition that " Miller requires a sentencer to consider a juvenile offender's youth and attendant characteristics before determining that life without parole is a proportionate sentence" regardless of whether the defense presents any mitigating evidence. Id. at ----, 136 S.Ct. at 734 (emphasis added). The majority's emphasis on the opportunity to present evidence, rather than on the need for the trial court's individualized consideration of such factors, is misplaced. Even if a juvenile offender foregoes the opportunity to present mitigating evidence, a court does not have the option of sentencing that juvenile to life without the possibility of parole absent consideration of the juvenile's youth and attendant circumstances.

The majority's approach places the burden on the juvenile offender to prove that he or she was not the rare exception to the rule. Notably, however, nothing in Miller requires a juvenile offender to present any evidence. As previously noted, because Montgomery interprets Miller as barring life without parole as a punishment for the vast majority of juvenile offenders, any burden of proof would seem to rest on the prosecution to prove that the juvenile offender was the rare exception to the rule.

III. Waiver

The majority further claims that, by entering into a plea agreement and stipulating to a life sentence, Jones waived the requirement that a Miller hearing be conducted. The majority goes on to make the broad assertion that all constitutional challenges are governed by waiver principles. Although I fully agree with the majority that many constitutional challenges may be waived, I cannot agree with the notion that a plea agreement can act as a waiver to all constitutional challenges. See, e.g. , Hill v. Lockhart , 474 U.S. 52 , 58, 106 S.Ct. 366 , 88 L.Ed.2d 203 (1985) (holding that "the two-part Strickland v. Washington test applies to challenges to guilty pleas based on ineffective assistance of counsel.") (emphasis added). Moreover, the majority fails to offer any controlling authority that supports its underlying proposition that a defendant can waive all constitutional challenges; it does not cite to any case indicating that a defendant can waive a challenge based on a continuing violation of a substantive rule of constitutional law. 7

Nor could it. The very nature of a substantive rule of constitutional law precludes such waiver. Such a violation occurs where "the conduct being penalized is constitutionally immune from punishment." United States v. United States Coin & Currency , 401 U.S. 715 , 724, 91 S.Ct. 1041 , 28 L.Ed.2d 434 (1971). See also Penry v. Lynaugh , 492 U.S. 302 , 330, 109 S.Ct. 2934 , 106 L.Ed.2d 256 (1989) (applying the same logic to punishments that "the Constitution itself deprives the State of the power to impose"). Such a violation "affects the foundation of the whole proceedings." Ex parte Siebold , 100 U.S. 371 , 376, 25 L.Ed. 717 (1880). Therefore, "[a] conviction or sentence imposed in violation of a substantive rule is not just erroneous but contrary to law and, as a result, void." Montgomery , 577 U.S. at ----, 136 S.Ct. at 731.

"An unconstitutional law is void, and is as no law." A penalty imposed pursuant to an unconstitutional law is no less void because the prisoner's sentence became final before the law was held unconstitutional. There is no grandfather clause that permits States to enforce punishments the Constitution forbids. To conclude otherwise would undercut *727 the Constitution's substantive guarantees.

Id. (quoting Siebold , 100 U.S. at 376 ).

Additionally, the notion that such a requirement can be waived violates our long standing principle that parties cannot confer power upon the court which it does not rightfully possess. Cf. Morrison v. Bestler , 239 Va. 166 , 169-70, 387 S.E.2d 753 , 755 (1990) ("Subject matter jurisdiction alone cannot be waived or conferred on the court by agreement of the parties."). As the Supreme Court established in Montgomery , a trial court lacks the power to impose a sentence of life without parole upon a juvenile offender without first conducting a Miller hearing. 577 U.S. at ----, 136 S.Ct. at 734-35 (describing a Miller hearing as the "procedural requirement necessary to implement a substantive guarantee"). Therefore, the fact that Jones entered into a plea agreement and stipulated to a life sentence without parole is irrelevant, as neither action is sufficient to confer upon a trial court the power to render a sentence which it constitutionally has no authority to impose. I do not believe that our Commonwealth can continue to enforce a punishment that the Supreme Court has determined to be prohibited by the Constitution.

IV. Void ab Initio

The majority takes the position that not all constitutional violations render a conviction/sentence void ab initio, rather "[c]ertain types of constitutional errors render convictions 'void,' i.e., voidable, and thus subject to collateral attack in federal habeas proceedings." While it is true that certain types of constitutional errors only render a sentence or conviction voidable, it is equally true that other types of constitutional errors render a conviction or sentence void ab initio. Under this Court's precedent, as well as the plain language of Montgomery , the constitutional error at issue in the present case (i.e., a violation of a substantive rule of constitutional law) clearly falls into the latter category of error, not the former.

The distinction between an action of the court that is void ab initio rather than merely voidable is that the former involves the underlying authority of a court to act on a matter whereas the latter involves actions taken by a court which are in error. An order is void ab initio if entered by a court in the absence of jurisdiction of the subject matter or over the parties, if the character of the order is such that the court had no power to render it , or if the mode of procedure used by the court was one that the court could "not lawfully adopt."

Singh v. Mooney , 261 Va. 48 , 51-52, 541 S.E.2d 549 , 551 (2001) (quoting Evans v. Smyth-Wythe Airport Comm'n , 255 Va. 69 , 73, 495 S.E.2d 825 , 828 (1998) ) (footnote omitted) (emphasis added).

As previously explained, "[a] conviction or sentence imposed in violation of a substantive rule is not just erroneous but contrary to law and, as a result, void." Montgomery , 577 U.S. at ----, 136 S.Ct. at 731. Here, it is unequivocal that " Miller announced a substantive rule of constitutional law." Montgomery , 577 U.S. at ----, 136 S.Ct. at 734. It is equally clear that the substantive rule announced in Miller must be given "retroactive effect regardless of when a conviction became final" because "[s]ubstantive rules ... set forth categorical constitutional guarantees that place certain criminal laws and punishments altogether beyond the State's power to impose ." Id. at 729 (emphasis added). Indeed, as the Supreme Court has explained, when applying substantive rules of constitutional law retroactively, the general approach is that "prior inconsistent judgments or sentences [are] void ab initio." United States v. Johnson , 457 U.S. 537 , 550, 102 S.Ct. 2579 , 73 L.Ed.2d 202 (1982) (citing Moore v. Illinois , 408 U.S. 786 , 800, 92 S.Ct. 2562 , 33 L.Ed.2d 706 (1972) and Ashe v. Swenson , 397 U.S. 436 , 437, n. 1, 90 S.Ct. 1189 , 25 L.Ed.2d 469 (1970) ). Montgomery established that, in the absence of a Miller hearing, a trial court lacks the power to sentence a juvenile to life without parole. Therefore, in my opinion, any sentence imposed in a manner inconsistent with the substantive constitutional rule announced in Miller is void ab initio. 8 See id.

*728 Rather than address the constitutional infirmity of Jones's sentence, the majority focuses on the trial court's power to impose the sentence under Virginia law. According to the majority, a sentence is only void ab initio if it is imposed in violation of the range of punishment prescribed by Virginia law. While it is well established that "a sentence imposed in violation of a prescribed statutory range of punishment is void ab initio," Grafmuller v. Commonwealth , 290 Va. 525 , 529, 778 S.E.2d 114 , 116 (2015) (quoting Rawls , 278 Va. at 221 , 683 S.E.2d at 549 ), nothing in our jurisprudence supports the majority's contention that a statutory violation is the only basis for rendering a sentence void ab initio. 9

V. Motion to Vacate

According to the majority, a motion to vacate is not the proper vehicle for Jones's claim because there is no precedent under Virginia law for using a motion to vacate to collaterally attack a conviction or sentence based solely on federal constitutional grounds. In the absence of such precedent, the majority asserts that a motion to vacate "is not a state collateral review proceeding 'open to a claim controlled by federal law.' " (Quoting Montgomery , 577 U.S. at ----, 136 S.Ct. at 740.) In taking this position, however, the majority ignores a fundamental tenet of our jurisprudence: a void ab initio order may be attacked in any manner at any time. Singh , 261 Va. at 52 , 541 S.E.2d at 551 .

The lack of jurisdiction to enter an order ... renders the order a complete nullity and it may be "impeached directly or collaterally by all persons, anywhere, at any time, or in any manner."

Id. (quoting Barnes v. American Fertilizer Co. , 144 Va. 692 , 705, 130 S.E. 902 , 906 (1925) ). See also Thacker v. Hubard & Appleby, Inc. , 122 Va. 379 , 386, 94 S.E. 929 , 930 (1918) ("Objection for want of jurisdiction of the subject matter may be taken by demurrer, or motion, or in any way by which the subject may be brought to the attention of the court.").

Indeed, contrary to the majority's assertion, the Supreme Court's holding in Montgomery is not limited to only those collateral proceedings that are "open to a claim controlled by federal law." Rather, the Supreme Court explained that an unconstitutional sentence may be attacked in any type of postconviction proceeding where an unlawful sentence may be challenged.

A penalty imposed pursuant to an unconstitutional law is no less void because the prisoner's sentence became final before the law was held unconstitutional. There is no grandfather clause that permits States to enforce punishments the Constitution forbids.

*729 To conclude otherwise would undercut the Constitution's substantive guarantees. Writing for the Court in United States Coin & Currency , Justice Harlan made this point when he declared that "[n]o circumstances call more for the invocation of a rule of complete retroactivity" than when "the conduct being penalized is constitutionally immune from punishment." 401 U.S. at 724, 91 S.Ct. 1041 . United States Coin & Currency involved a case on direct review; yet, for the reasons explained in this opinion, the same principle should govern the application of substantive rules on collateral review. As Justice Harlan explained, where a State lacked the power to proscribe the habeas petitioner's conduct, "it could not constitutionally insist that he remain in jail." Desist v. United States , 394 U.S. 244 , 261, n. 2, 89 S.Ct. 1048 , 22 L.Ed.2d 248 (1969) (Harlan, J. dissenting). If a State may not constitutionally insist that a prisoner remain in jail on federal habeas review, it may not constitutionally insist on the same result in its own postconviction proceedings. Under the Supremacy Clause of the Constitution, state collateral review courts have no greater power than federal habeas courts to mandate that a prisoner continue to suffer punishment barred by the Constitution. If a state collateral proceeding is open to a claim controlled by federal law, the state court "has a duty to grant the relief that federal law requires." Yates v. Aiken , 484 U.S. 211 , 218, 108 S.Ct. 534 , 98 L.Ed.2d 546 (1987). Where state collateral review proceedings permit prisoners to challenge the lawfulness of their confinement, States cannot refuse to give retroactive effect to a substantive constitutional right that determines the outcome of that challenge.

Montgomery , 577 U.S. at ----, 136 S.Ct. at 731-32 (emphasis added).

This Court has recognized that prisoners may challenge the lawfulness of their confinement using a motion to vacate. See Rawls , 278 Va. at 218 , 683 S.E.2d at 547 (holding that a motion to vacate is the appropriate procedural device to challenge a conviction or sentence that is void ab initio and that such a conviction or sentence may be corrected at any time). While it is true that Rawls and its progeny all involved sentences in excess of a statutory limitation, the underlying rationale must also apply to sentences in violation of a substantive rule of constitutional law because in both situations, a court is imposing a sentence it is without power to impose, thereby rendering the sentence void ab initio. Compare Rawls , 278 Va. at 221 , 683 S.E.2d at 549 (explaining that the reason such sentences are void ab initio is because "the character of the judgment was not such as the [C]ourt had the power to render") with Montgomery , 577 U.S. at ----, 136 S.Ct. at 739 (holding that sentences imposed in violation of a substantive rule of constitutional law are "altogether beyond the State's power to impose"). Indeed, "[a] nullity is a nullity, and out of nothing[,] nothing comes. Ex nihilo nihil fit is one maxim that admits of no exceptions." Harrell v. Welstead , 206 N.C. 817 , 175 S.E. 283 , 285 (1934). Accordingly, the underlying rationale of why a sentence is void ab initio cannot and does not dictate the manner in which such a sentence may be attacked. If a prisoner may use a motion to vacate to challenge a void ab initio sentence because it was imposed in violation of a statute, logic dictates that the same procedural device can be used to challenge a void ab initio sentence imposed in violation of the Constitution.

Furthermore, contrary to the majority's statement, there is precedent under Virginia law for using a motion to vacate to collaterally attack a conviction or sentence based on federal constitutional grounds. In Loving v. Commonwealth , 206 Va. 924 , 925, 147 S.E.2d 78 , 79 (1966), just under five years after they had pled guilty, Richard and Mildred Loving used a motion to vacate to challenge the constitutionality of Virginia's miscegenation statute.

The majority dismisses the precedential value of Loving by noting that the propriety of using a motion to vacate to collaterally attack a conviction or sentence based solely on federal constitutional grounds was not litigated. In other words, the majority intimates that the Lovings' claim should have been procedurally defaulted and dismissed by Virginia's courts before the matter *730 reached the Supreme Court, because, in Virginia, a motion to vacate cannot be used to collaterally attack a constitutionally invalid conviction.

Our ruling in Hirschkop v. Commonwealth , 209 Va. 678 , 166 S.E.2d 322 (1969), clearly indicates otherwise. As the majority notes, in Hirschkop this Court addressed the use of a motion to vacate in Loving . Id. at 681, 166 S.E.2d at 324 . However, the majority overlooks the fact that, in concluding that the use of a motion to vacate was inappropriate in Hirschkop , the Court expressly distinguished Loving on several bases. See id. ("[ Loving ] is not apposite to [Hirschkop's] case."). The most important difference noted by this Court was that "in Loving , the statute under which the conviction was had was attacked as violative of the Constitutions of Virginia and of the United States, and the sentences imposed were attacked as invalid." Id. This basis for differentiating Loving is very similar to the argument raised by Jones in the present case.

The majority's concerns that "the multitude of substantive and procedural requirements in habeas corpus law would be permanently sidelined" are unfounded. Jones is not seeking to subvert our habeas corpus law. Nor is he seeking to use a motion to vacate "as an all-purpose pleading for collateral review of criminal convictions." Rather, Jones is simply using a motion to vacate to apply Virginia law in the manner this Court announced close to a century ago in Thacker : to bring a void ab initio order to the court's attention. 122 Va. 379 , 386, 94 S.E. 929 , 930 (1918) ("Objection for want of jurisdiction of the subject matter may be taken by demurrer, or motion, or in any way by which the subject may be brought to the attention of the court .") (emphasis added). See also Rawls , 278 Va. at 218 , 683 S.E.2d at 547 (recognizing that a motion to vacate is the proper vehicle to challenge a void ab initio sentencing order); Singh , 261 Va. at 52 , 541 S.E.2d at 551 ("The lack of jurisdiction to enter an order ... renders the order a complete nullity [that] may be impeached directly or collaterally by all persons, anywhere, at any time, or in any manner.").

The majority's analysis concludes that individuals such as the Lovings and Jones have no avenue for relief in Virginia courts, more than two years after their convictions become final, even if they can clearly prove that their sentences were imposed in violation of a recently determined substantive constitutional right. I disagree with this previously unexpressed restriction on the ability of Virginia state courts to address the retroactive application of new substantive constitutional rulings, because it is clearly inconsistent with our prior cases. 10 See, e.g., Loving , 206 Va. at 926 , 147 S.E.2d at 80 ; Hirschkop , 209 Va. at 681 , 166 S.E.2d at 324 ; Hodges v. Commonwealth , 213 Va. 316 , 317, 191 S.E.2d 794 , 795 (1972).

VI. Conclusion

Although I believe that the law in this case is clear, the facts are another matter. 11 Both parties agree that the record in the present case is incomplete and, therefore, it is unclear whether Jones received a Miller hearing before he was sentenced. As such, both parties request that the matter be remanded to the circuit court for further development of the facts surrounding the imposition of Jones's sentence of life without parole to determine whether he received the requisite hearing. In my opinion, this is the best course of action to ensure the constitutionality *731 of the sentence imposed. If the circuit court determines that Jones did, in fact, receive a Miller hearing, then his motion to vacate would be properly denied. On the other hand, if it is determined that Jones did not receive a Miller hearing, his sentence of life in prison without parole would be void ab initio and he would be entitled to a new sentencing hearing that complies with Miller and Montgomery . Accordingly, I would vacate the circuit court's decision to deny Jones's motion to vacate and remand the matter for further proceedings to determine whether Jones was properly sentenced on his capital murder charge.