United States v. Madrigal-Valadez, 561 F.3d 370, 376 (4th Cir. Apr. 1, 2009) ("Our research has not disclosed any authority that makes the status of being in the United States after entering in violation of [8 U.S.C.] 1325(a) a separate crime. Accordingly, contrary to district court's alternative holding, Madrigal's entry into the Fort Lee access road was not conduct that was prohibited by 1325(a) or 1382.").