Leonardo Vasquez appeals his guilty plea conviction for conspiracy to possess and possession with the intent to distribute 100 kilograms or more of marijuana. He argues that the sentencing provision of 21 U.S.C. § 841(b)(1)(B) is unconstitutional in light of Apprendi v. New Jersey, 530 U.S. 466, 490, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000). Vasquez concedes that his argument is foreclosed by our opinion in United States v. Slaughter, 238 F.3d 580, 581-82 (5th Cir. 2000). He raises the issue only to preserve it for Supreme Court review.

A panel of this court cannot overrule a prior panel’s decision in the absence of an intervening contrary or superseding decision by this court sitting en banc or by the United States Supreme Court. Burge v. Parish of St. Tammany, 187 F.3d 452, 466 (5th Cir. 1999). No such decision overruling Slaughter exists. Accordingly, Vasquez’s argument is foreclosed, and the judgment of the district court is AFFIRMED.

The Government has moved for a summary affirmance in lieu of filing an appellee’s brief. In its motion, the Government asks that an appellee’s brief not be required. The motion is GRANTED.

AFFIRMED; MOTION GRANTED.