In this Saturday, Oct. 4, 2008 photo, Secret Service agents watch as Air Force One departs Midland International Airport with President Bush and first lady Laura Bush aboard in Midland, Texas. The ... more 
In this Saturday, Oct. 4, 2008 photo, Secret Service agents watch as Air Force One departs Midland International Airport with President Bush and first lady Laura Bush aboard in Midland, Texas. The Secret Service has been tarnished by a prostitution scandal that erupted April 13, 2012 in Colombia involving 12 Secret Service agents, officers and supervisors and 12 more enlisted military personnel ahead of President Barack Obama's visit there for the Summit of the Americas. (AP Photo/Matt Slocum) less 
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Associated Press | Photo By Matt Slocum
Sat, Apr 28, 2012 11:49 AM EDT