Eduardo Efrain Chavez appeals his guilty-plea conviction and sentence for pos *382 session of more than 1,000 kilograms of marijuana with intent to distribute, in violation of 21 U.S.C. § 841(a) and (b)(1)(A). He argues that the sentencing provisions of 21 U.S.C. § 841(b) are unconstitutional in light of Apprendi v. New Jersey, 530 U.S. 466, 490, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000). Chavez concedes that his argument is foreclosed by our opinion in United States v. Slaughter, 238 F.3d 580, 581-82 (5th Cir. 2000). See United States v. Valenzuela-Quevedo, 407 F.3d 728, 731 (5th Cir. 2005), petition for cert. filed (July 25, 2005)(No. 05-5556). He raises the issue only to preserve it for further review. Accordingly, Chavez’s argument is foreclosed, and the judgment of the district court is AFFIRMED.