LAS VEGAS, NV - MAY 19: In this photo provided by the Las Vegas News Bureau, Mexican President Felipe Calderon (R) greets tourism officials prior to his address at the 2011 Global Travel & Tourism ... more 
LAS VEGAS, NV - MAY 19: In this photo provided by the Las Vegas News Bureau, Mexican President Felipe Calderon (R) greets tourism officials prior to his address at the 2011 Global Travel & Tourism Summit at the Aria Resort May 19, 2011 in Las Vegas, Nevada. More than 1,000 government officials and tourism executives from around the world are attending the two-day conference, which highlights issues and challenges in the industry. Also pictured are David Scowsill (L), president and CEO of the World Travel & Tourism Council and Rossi Ralenkotter (2nd L), president and CEO of the Las Vegas Convention and Visitors Authority. (Photo by Darrin Bush, Las Vegas News Bureau via Getty Images) less 
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Thu, May 19, 2011 6:51 PM EDT