Mexico's President Enrique Pena Nieto (C) waves next to his Central American counterparts (L-R), Guatemala's Otto Perez Molina, Panama's Ricardo Martinelli, Costa Rica's Laura Chinchilla and Honduras' Porfirio Lobo, during an official photo session at the opening of the Central American Integration System (SICA) summit in San Jose February 20, 2013. REUTERS/Juan Carlos Ulate (COSTA RICA - Tags: POLITICS)