Eduardo Luna-Morales appeals the 24-month sentence imposed after he pleaded guilty to illegally reentering the United States after deportation. He contends that the sentence is greater than necessary to satisfy the sentencing factors of 18 U.S.C. § 3553(a), partly because the Sentencing Guidelines for illegal reentry are not empirically based and partly because *360 the district court gave inadequate consideration to his personal circumstances and motive for reentry.

The sentence is reviewed for reasonableness under an abuse-of-discretion standard. See Gall v. United States, 552 U.S. 38, 46, 128 S.Ct. 586, 169 L.Ed.2d 445 (2007); Rita v. United States, 551 U.S. 338, 351, 127 S.Ct. 2456, 168 L.Ed.2d 203 (2007). Because the guidelines range was properly calculated, Luna-Morales’s sentence at the bottom of that range is presumed reasonable. See United States v. Alonzo, 435 F.3d 551, 554 (5th Cir. 2006).

Luna-Morales essentially asks us to substitute his assessment of the relevant sentencing factors for the district court’s well-reasoned assessment, which is contrary to the deferential review dictated by Gall and Rita. Luna-Morales concedes that his challenge to Guideline § 2L1.2 as lacking an empirical basis is foreclosed by our precedent; he presents this issue only to preserve it for possible further review. The judgment of the district court is AFFIRMED.