Mena-Flores v. Holder, ___ F.3d ___, 2015 WL 294629 (10th Cir. Jan. 23, 2015) (the reviewing court evaluates immigration agency credibility determinations under the abuse of discretion standard); citing Elzour v. Ashcroft, 378 F.3d 1143, 1150 n. 9 (10th Cir. 2004); see United States v. Aguayo"Delgado, 220 F.3d 926, 934"35 (8th Cir. 2000) (holding that the evidence was sufficient to convict beyond a reasonable doubt when the evidence consisted mainly of testimony by other participants in drug transactions, even though there were questions about the reliability and consistency of the accounts).