Singh v. U.S. Atty. Gen., ___ F.3d ___,2009 WL 604370 (11th Cir. Mar. 10, 2009) (per curiam) ("an appellant's brief must include an argument containing 'appellant's contentions and the reasons for them, with citations to the authorities and parts of the record on which the appellant relies.' Fed.R.App.P. 28(a)(9)(A). Thus, an appellant's simply stating that an issue exists, without further argument or discussion, constitutes abandonment of that issue and precludes our considering the issue on appeal. Rowe v. Schreiber, 139 F.3d 1381, 1382 n. 1 (11th Cir.1998). Singh's simple statement that our treating his conviction as a conviction for immigration purposes would violate his right to equal protection, without further explanation or discussion, did not sufficiently raise the issue on appeal, and thus it is abandoned. Id.").