Armando Dominguez-Chavez (Dominguez) appeals the 24-month sentence imposed following his guilty plea conviction for illegal reentry in violation of 8 U.S.C. § 1326. Dominguez contends that the district court abused its discretion in denying his motion for discovery and failing to compel the Government to produce documentation concerning the Western District of Texas’s refusal to participate in a fast-track program. He also contends that the absence of a fast-track program in the Western District of Texas resulted in an unwarranted sentencing dispai’ity and that the district court erred in failing to consider this unwarranted sentencing disparity pursuant to 18 U.S.C. § 3553(a)(6).

Dominguez’s contention that the absence of a fast-track program in the Western District of Texas resulted in an unwarranted sentencing disparity is foreclosed by circuit precedent. See United States v. Gomez-Herrera, 523 F.3d 554, 562-63 (5th Cir.2008), petition for cert. filed (July 2, 2008) (No. 08-5226); United States v. Lopez-Velasquez, 526 F.3d 804, 808 (5th Cir. 2008), petition for cert. filed (July 25, 2008) (No. 08-5514). Further, in light of Gomez-Herrera and Lopez-Velasquez, the materials sought were neither relevant nor necessary to district court’s imposition of sentence, and Dominguez has failed to show that the district court abused its discretion in denying his motion for discovery. See United States v. Butler, 429 F.3d 140, 148 (5th Cir.2005). Finally, Dominguez has failed to adequately raise or develop his due process and equal protection arguments in his appellate brief, and, thus, they are waived. See United States v. Thames, 214 F.3d 608, 611 n. 3 (5th Cir. 2000). Accordingly, the district court’s judgment is AFFIRMED.