Chile's President Sebastian Pinera, right, listens as Mexico's President Felipe Calderon speaks in front of the Pyramid of the Moon during a tour of the Teotihuacan archeological site on the outskirts... more 
Chile's President Sebastian Pinera, right, listens as Mexico's President Felipe Calderon speaks in front of the Pyramid of the Moon during a tour of the Teotihuacan archeological site on the outskirts of Mexico City, Saturday July 9, 2011. Pinera is on a three-day official visit to Mexico. (AP Photo/Franklin Reyes) less 
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Associated Press | Photo By Franklin Reyes
Sat, Jul 9, 2011 7:38 PM EDT