U.S. Secret Service agents stands watch as Republican presidential candidate Mitt Romney addresses the U.S. Hispanic Chamber of Commerce in Los Angeles on Monday, Sept. 17, 2012. (AP Photo/Charles Dharapak)
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U.S. Secret Service agents stands watch as Republican presidential candidate Mitt Romney addresses the U.S. Hispanic Chamber of Commerce in Los Angeles on Monday, Sept. 17, 2012. (AP Photo/Charles Dharapak)
