U.S. Vice President Joe Biden (L) waves next to 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 ... more 
U.S. Vice President Joe Biden (L) waves next to 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 his 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 4:57 PM EDT