Mexico's President Enrique Pena Nieto (L) and his Panamanian counterpart Ricardo Martinelli shake hands after signing a free trade agreement between the two countries during the last day of the World ... more 
Mexico's President Enrique Pena Nieto (L) and his Panamanian counterpart Ricardo Martinelli shake hands after signing a free trade agreement between the two countries during the last day of the World Economic Forum on Latin America in Panama City April 3, 2014. REUTERS/ Carlos Jasso (PANAMA - Tags: POLITICS) less 
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Reuters | Photo By CARLOS JASSO / REUTERS
Thu, Apr 3, 2014 1:05 PM EDT