U.S. Vice President Joe Biden (L) shakes hands with Mexico's President Enrique Pena Nieto after a meeting at Los Pinos Presidential Residence in Mexico City September 20, 2013. Biden urged Mexico and ... more 
U.S. Vice President Joe Biden (L) shakes hands with Mexico's President Enrique Pena Nieto after a meeting at Los Pinos Presidential Residence in Mexico City September 20, 2013. Biden urged Mexico and the U.S. to boost trade and investment ties while on a visit to Mexico City on Friday. REUTERS/Edgard Garrido (MEXICO - Tags: POLITICS) less 
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Reuters | Photo By EDGARD GARRIDO / REUTERS
Fri, Sep 20, 2013 4:56 PM EDT