Carlos Romeo Hernandez-Esteban (“Hernandez”) was convicted on a plea of guilty to a violation of 8 U.S.C. § 1326(a) and (b)(2) (illegal reentry into the United States following a previous deportation), and the district court sentenced him to a prison term of 24 months. He now appeals, raising one argument: the district court imposed a substantively unreasonable sentence by failing to consider sentencing disparities between fast-track and non-fast-track jurisdictions when considering a downward variance from the Guidelines sentencing.

We rejected this argument in United States v. Vegor-Castillo, 540 F.3d 1235 (11th Cir. 2008). Vega-Castillo constitutes binding precedent. We are therefore constrained to follow it “unless and until it is overruled by this court en banc or by the Supreme Court.” United States v. Brown, 342 F.3d 1245, 1246 (11th Cir. 2003).

AFFIRMED.