Opinion for the Court filed by Senior Circuit Judge BAZELON.

Opinion concurring in the judgment filed by Senior Circuit Judge MacKINNON.

The allegations in this case raise troubling issues of law: Appellant Briggs alleges that appellee Goodwin, a United States Attorney, knowingly gave false sworn testimony before a district court, which resulted in a violation of appellant’s constitutional rights. Appellee asserts entitlement to absolute immunity from civil liability arising from his testimony. This court rejected that claim. Thereafter the Supreme Court decided Briscoe v. LaHue1 and we granted rehearing to reconsider the issue in light of that decision. Upon such reconsideration, we are compelled to the conclusion that Briscoe entitles appellee to absolute immunity as a witness.

I

The factual background and procedural history in this case have been fully detailed in our earlier opinions, Briggs v. Goodwin, 698 F.2d 486 (D.C.Cir. 1983) (“Briggs II”); Briggs v. Goodwin, 569 F.2d 10 (D.C.Cir. 1977), cert. denied, 437 U.S. 904, 98 S.Ct. 3089, 57 L.Ed.2d 1133 (1978) (“Briggs I”); only a brief review is required here.

The case arises out of a grand jury proceeding in which several grand jury witnesses, including appellant Briggs, were represented by the same counsel.2 In response to rumors that some of the grand jury witnesses were government informants, the witnesses filed a motion in district court to compel the government to disclose whether any government informants were among the witnesses represented by group counsel. At the hearing on the motion, appellee Goodwin, who was the prosecutor in charge of the grand jury investigation, took the stand and was asked under oath whether any of the witnesses represented by group counsel were government informants. Goodwin answered, “No.” Appellant Briggs alleges that Goodwin’s response was false, that Goodwin knew it to be false, and that the allegedly false statement caused Briggs to share defense strategy with an informant, who passed it back into the hands of the government.

*414Briggs sued Goodwin, inter alia, for damages arising out of violation of Briggs’s sixth amendment rights. Goodwin asserted absolute immunity on two grounds: 1) as a prosecutor, and 2) as a witness. The district court refused to dismiss the case on either ground, but agreed to certify the question of prosecutorial immunity for interlocutory appeal.

In a 2-1 decision, this court rejected Goodwin’s prosecutorial immunity claim. Briggs I, 569 F.2d 10 (D.C.Cir. 1977), cert. denied, 437 U.S. 904, 98 S.Ct. 3089, 57 L.Ed.2d 1133 (1978). Applying the “functional” test outlined in Imbler v. Pachtman,3 the court found that at the time of the statement Goodwin was operating in his investigatory role.4 In that capacity, he was not entitled to the absolute immunity conferred on prosecutors acting as advocates, but only to the qualified immunity provided for police and other government officials acting as investigators.5

For a variety of reasons,6 Briggs I also reached the question of witness immunity, despite the district court’s refusal to certify the issue for interlocutory appeal7 and the failure of the parties to brief it.8 On this issue, the Briggs I panel held that Goodwin’s statement was not the testimonial act of a witness in the traditional sense, and that the protection of absolute witness immunity should not apply.9 The majority went on at some length to explain that even if Goodwin had been a witness, common law witness immunity might not protect government officials whose perjured testimony infringed constitutional rights.10 The case was remanded for the district court to determine Goodwin’s entitlement to a qualified immunity based upon good faith.

On remand, the district court granted summary judgment for Goodwin.11 In the instant appeal, we reversed on the ground that factual issues remain in dispute. Briggs II, 698 F.2d 486 (D.C.Cir. 1983). Thereafter, the Supreme Court decided Briscoe; we thereupon ordered supplemental briefing and granted rehearing to reconsider the issue of witness immunity.

Briscoe v. LaHue.

Briscoe involved a civil suit for damages under 42 U.S.C. § 1983 against a police officer who allegedly gave perjured testimony that led to the plaintiff’s criminal conviction. All parties to the suit agreed that the common law affords lay witnesses absolute immunity from civil suits based on their testimony.12 The case presented the issue of whether the same immunity applies to police and other government witnesses testifying in their official capacity.13

*415Absolute witness immunity is traditionally justified as a response to two concerns: 1) intimidation, and 2) self-censorship. Without the protection of immunity, witnesses with important information may be dissuaded from 'coming forward to testify because of the potential for civil liability arising out of their participation in a judicial proceeding.14 Even after taking the stand, witnesses may be inhibited by the risk of liability from speaking freely for fear of making honest errors that might subject them to suit.15 Absolute immunity has therefore been justified in order that “those involved in judicial proceedings be ‘given every encouragement to make a full disclosure of all pertinent information within their knowledge.’ ”16 The plaintiffs in Briscoe, and the dissenting opinions,17 offered several reasons why these concerns apply with less force to government witnesses such as police officers than to lay witnesses. First, police officers have a professional interest in obtaining prosecutions that is likely to counterbalance their hesitation to testify. Second, the financial burden of defending a civil suit is less of a concern for police officers, whose defense in suits alleging constitutional violations in the performance of their jobs is ordinarily undertaken by the government. In such suits generally, police officers are entitled to qualified, not absolute, immunity. Third, “perjured testimony by police officers is likely to be more damaging to constitutional rights than such testimony by ordinary citizens, because the policeman in uniform carries special credibility in the eyes of the jurors.”18 For this reason, cross-examination may be less effective in discrediting the perjured testimony of police officers than that of lay witnesses. Finally, the need for close cooperation between prosecutors and police officers reduces the likelihood of prosecutions for perjury, thereby undermining the sanction on which the law relies to compel immunized witnesses to speak the truth.19

Briscoe explicitly considered these concerns and found that they did not justify excluding official witnesses from the protection of absolute witness immunity.20 The Court said that the police officer functions like “any other witness.”21 Moreover, the Court added, without absolute immunity, the potential for litigation against official witnesses “might undermine not only their contribution to the judicial process but also the effective performance of their other public duties.”22 Thus, the Court held that the public interest in “protecting the judicial process,”23 which had justified affording judges, prosecutors and lay witnesses the protection of absolute immunity, also justified granting that protection to police officers when they take the witness stand.

*416II

In Briggs I, this court denied Goodwin witness immunity because his testimonial act differed from that of a witness in the usual sense. The court found that Goodwin’s brief statement on the stand “was prompted by, and directly incidental to” his involvement in managing and administering an investigation.24 “To the extent that [Goodwin’s] one word answer is viewed as a testimonial act, it was one occasioned by, and critical to, appellant’s discharge of that responsibility.”25

We find it difficult to distinguish Goodwin’s testimonial act from those of police officers in situations falling within the rationale of Briscoe. Testimony by a police officer will very often involve challenges to his conduct while performing investigatory tasks. A police officer who has been integrally involved in an investigation that culminates in a criminal prosecution has a clear interest in the outcome of the trial. In such a situation, the police officer has professional and personal interests in his testimony that are closely analogous to Goodwin’s interest in the testimony out of which this suit arises. Briggs I explicitly found Goodwin to be operating not as a prosecutor but as an investigator.26 We decided that in that role his immunity should resemble that of a police officer involved in an investigation. Briscoe informs us that that immunity is absolute for statements made on a witness stand. Briscoe therefore compels the conclusion that when Goodwin made his sworn statement from the witness stand,27 he enjoyed absolute immunity.

The fact that Briscoe involved statements at a trial whereas this case involves statements at a hearing on a motion during the grand jury phase of an investigation is not a distinction that allows a different result. Briscoe emphasized the concern that the absence of immunity would interfere with the ability of “judicial proceedings” 28 “to determine where the truth lies.”29 That concern applies not only to trials, but to any judicial proceeding where the testimony of witnesses might be affect*417ed by the lack of immunity.30 Thus, the rationale of Briscoe applies with equal force whenever a witness testifies in a judicial proceeding the function of which is to ascertain factual information.

In addition to causing reconsideration of Goodwin’s witness status, Briscoe rejected the reasons offered in Briggs I for why absolute witness immunity might not apply to government officers in suits alleging constitutional violations.31 Briggs I explicitly noted that “[p]olicy considerations counsel-ling the insulation of private citizens from civil liability arising from their performance as witnesses do not apply with equal force when a complaint charges that constitutional rights have been violated by a public employee operating from the witness stand .... The unique importance of constitutional rights hardly needs restatement .... [I]t can be asserted with both reason and authority that absolute immunity is not to be extended to the constitutional tort context absent the most compelling justification.”32 The Supreme Court apparently found that neither the public employee status of the witness, nor the constitutional character of the alleged violation constituted such a compelling justification.33

Ill

In granting absolute immunity to public officials acting as witnesses, the Supreme Court recognized that “the alternative of limiting the official’s immunity would dis-serve the broader public interest.”34 “In this instance it has been thought in the end better to leave unredressed the wrongs done by dishonest officers than to subject those who try to do their duty to the constant dread of retaliation.”35 As a lower court, we are bound by the balance struck.36 We therefore vacate our prior opinion and affirm the judgment of the district court granting summary judgment for Goodwin.

So ordered.

(concurring in the judgment):

I am not in disagreement with much of the analysis and statements in Judge Bazelon’s present opinion, but I believe some of the facts are more favorable to Goodwin than the opinion recognizes, and I prefer to make several comments and rest my concurrence in the result on the following grounds. First, I continue to adhere to the views expressed in my dissent from the panel’s original decision in Briggs v. Good*418win II, 698 F.2d 486, 497-98 (D.C.Cir. 1983). Second, it is my view that Goodwin has a valid factual defense in that he had given orders that government informants be excluded from the class of potential defendants represented by defense counsel and was justified in assuming that his orders had been carried out. Third, in addition to my opinion that Goodwin enjoys immunity as a witness, I am also of the opinion that he possesses complete immunity as a prosecutor, since I generally agree with the opinions expressed in Judge Wilkey’s dissent in Briggs v. Goodwin I, 569 F.2d 10, 29-61 (D.C.Cir. 1977), cert. denied, 437 U.S. 904, 98 S.Ct. 3089, 57 L.Ed.2d 1133 (1978).

I must also voice my disagreement with the view expressed in footnote 36 of the majority opinion. That view fails to acknowledge a basic principle of law that has been recognized as fundamental to American jurisprudence for over a hundred years: that those who participate in public litigation and who perform certain governmental functions are not to be subjected thereby to harassing civil litigation. This principle has been consistently applied to judges, prosecutors, legislators and presidents, as well as to witnesses. The law of immunity and its compelling justifications have been expounded by some of the greatest jurists in our nation’s history. See, e.g., Bradley v. Fisher, 13 Wall. (80 U.S.) 337, 351, 20 L.Ed. 646 (1872) (Field, J.) (“[Jjudges ... are not liable to civil actions for their judicial acts, even when such acts are in excess of their jurisdiction, and are alleged to have been done maliciously or corruptly.”); Pierson v. Bay, 386 U.S. 547, 554, 87 S.Ct. 1213, 1217, 18 L.Ed.2d 288 (1967) (Warren, C.J.) (“This immunity ‘is not for the protection or benefit of a malicious or corrupt judge, but for the benefit of the public, whose interest it is that judges should be at liberty to exercise their functions with independence and without fear of consequences.’ ”) (quoting Scott v. Stansfield, L.R. 3 Ex. 220, 223 (1868)); Barr v. Matteo, 360 U.S. 564, 572-73, 79 S.Ct. 1335, 1340, 3 L.Ed.2d 1434 (1959) (Harlan, J.) (“The privilege is not a badge or emolument of exalted office, but an expression of a policy designed to aid in the effective functioning of government.”); Gregoire v. Biddle, 177 F.2d 579, 581 (2d Cir. 1949), cert. denied, 339 U.S. 949, 70 S.Ct. 803, 94 L.Ed. 1363 (1950) (L. Hand, J.) (“The justification for ... [denying recovery] is that it is impossible to know whether the claim is well founded until the case has been tried, and to submit all officials, the innocent as well as the guilty, to the burden of trial and the danger of its outcome would dampen the ardor of all but the most resolute ....”) (quoted in Nixon v. Fitzgerald, 457 U.S. 731, 752, 102 S.Ct. 2690, 2703 n. 32, 73 L.Ed.2d 349 (1982)). My final objection to the personal comments in footnote 36 is that they are extrajudicial and serve no worthwhile purpose, as the Supreme Court has spoken.