Pedro Alberto Nunez pleaded guilty, pursuant to a plea agreement, to possession with intent to distribute 500 grams or more of a mixture and substance containing a detectable amount of methamphetamine, in violation of 21 U.S.C. § 841(a)(1), (b)(l)(A)(viii) and 18 U.S.C. § 2. The district court imposed a 188-month sentence and a three-year term of supervised release.

Nunez argues that the sentencing disparity between defendants who possess actual methamphetamine and defendants who possess a substance containing a detectable amount of methamphetamine is contrary to the intent of Congress and violates the Equal Protection Clause. We have rejected similar arguments, holding that the sentencing disparity created by the 10 to one ratio between actual methamphetamine and a substance containing methamphetamine is not irrational or arbitrary and, as a result, does not violate the Due Process Clause. United States v. Molina, 469 F.3d 408, 418-14 (5th Cir. 2006). For similar reasons, Nunez’s equal protection argument fails. See Chapman v. United States, 500 U.S. 453, 465, 111 S.Ct. 1919, 114 L.Ed.2d 524 (1991).

Nunez also argues the district court erred in calculating the drug quantity attributable to him and in applying the two-level enhancement for importation of methamphetamine. The district court’s findings, however, were plausible in light of the record as a whole. See United States v. Cisneros-Gutierrez, 517 F.3d 751, 764 (5th Cir. 2008). Thus, the district court did not clearly err in calculating the drug quantity and in applying the two-level enhancement. See id. Accordingly, the district court’s judgment is AFFIRMED.