Jose Cazares-Alvarado appeals his guilty-plea conviction and sentence for conspiracy to possess with intent to distribute more than five kilograms of cocaine. He argues that the district court erred when it denied a reduction in his total offense level based on his mitigating role in the offense and that 21 U.S.C. §§ 841 and 860 are facially unconstitutional in light of Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000). CazaresAlvarado concedes that his second argument is foreclosed but nevertheless raises the issue to preserve it for possible further review.

Cazares-Alvarado’s construction of a hidden compartment in which to conceal the large amount of cocaine involved in his offense was not “peripheral to the advancement of the illicit activity.” See United States v. Thomas, 932 F.2d 1085, 1092 (5th Cir.1991). The district court therefore did not clearly err in determining that Cazares-Alvarado was not entitled to a mitigating role reduction pursuant to U.S.S.G. § 3B1.2. See United States v. Zu niga, 18 F.3d 1254, 1261 (5th Cir.1994).

Cazares-Alvarado’s argument regarding the constitutionality of the statutes of conviction, raised for the first time on appeal,[*972] is foreclosed by our decision in United States v. Slaughter, 238 F.3d 580, 582 (5th Cir.2000). Cazares-Alvarado has failed to demonstrate error, plain or otherwise, regarding Apprendi. See id.

The judgment of the district court is therefore AFFIRMED.