Matter of Quilantan, 25 I. & N. Dec. 285 (BIA 2010) (where an alien entered U.S. through a border checkpoint by car with U.S. citizen friend driving and immigration officer only spoke to driver and allowed the car to enter, the alien proved she was admitted to the U.S. pursuant to 8 U.S.C. 101(a)(13)(A), because she need only prove procedural regularity in her entry and not that she was questioned by immigration authorities or admitted in a particular status), reaffirming Matter of Areguillin, 17 I&N Dec. 308 (BIA 1980).