Ubaldo Hernandez, a native and citizen of Mexico, has petitioned for review of the Board of Immigration Appeals’ (BIA) summary dismissal of his appeal for failure to file a supporting brief pursuant to 8 C.F.R. § 1003.1(d)(2)(i)(E). Hernandez has failed to brief, and has thus waived, the central issue whether the BIA erred in summarily dismissing his appeal on this basis. See Soadjede v. Ashcroft, 324 F.3d 830, 833 (5th Cir. 2003). Accordingly, he has not *748 shown error in the BIA’s decision, and his petition for review is DENIED.