United States v. Noriega-Perez, ___ F.3d ___, 2012 WL 289221 (10th Cir. Feb. 1, 2012) (affirming alien-smuggling conviction where strong circumstantial evidence presented at trial sufficed for the jury to find beyond a reasonable doubt that non-testifying material witnesses were illegal aliens, and that sufficient specific evidence linked defendant to intentionally aiding the cross-border transportation of the named material witnesses before they were dropped off in the United States).