Naco, AZ. His sneakers betrayed him. The young man with the dark skin and tired look, keeps claiming in Spanish that he is a US citizen. But his dirty sneakers tell another story. Their soles fit the prints the border patrol followed since last night and that lead them straight to the small trailer. With the agents pointing at his sneakers, the young man knows he is trapped. He finally gives up and admits that he is from the State of Jalisco in Central Mexico. He climbed over the wall three miles from here, which was built to separate Naco, a small town beaten by the sun on the Mexican side of the desert, from its namesake in Arizona.