President Barack Obama, center, speaks with an unidentified participant of the sixth Summit of the Americas as U.S. Labor Secretary Hilda Solis, left, and U.S. Trade Representative Ron Kirk, right, look on in Cartagena, Colombia, Saturday April 14, 2012. The summit brings together presidents and prime ministers from Canada, the Caribbean, Latin America and the U.S. (AP Photo/Carolyn Kaster)