In this Saturday, Nov. 21, 2015 photo, flip flops with the design of the U.S. flag lay next to its owner, a Cuban migrant sleeping inside of the public restroom of the border control building in Penas Blancas, Costa Rica, border with Nicaragua. Once they reach the U.S. border, they can just show up at an established U.S. port of entry and declare their nationality, avoiding the dangerous desert crossings that confront many migrants who try to avoid U.S. border patrol. (AP Photo/Esteban Felix)