Republican presidential candidate, former Massachusetts Gov. Mitt Romney, greets attendees at the NALEO (National Association of Latino Elected and Appointed Officials) conference in Orlando, Fla., Thursday, June 21, 2012. (AP Photo/Charles Dharapak)

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, greets attendees at the NALEO (National Association of Latino Elected and Appointed Officials) conference in Orlando, Fla., Thursday, June 21, 2012. (AP Photo/Charles Dharapak)