Supporters of Republican presidential candidate Rick Perry attend a rally earlier this month in Newport Beach, Calif. Though some Republican voters have doubts about Perry, recent polls show it's not because of his stance on Social Security, which he's called a "Ponzi scheme." Kevork Djansezian/Getty Images hide caption

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Public workers march with a banner that reads in Spanish "More jobs, zero layoffs" in San Juan on Oct. 15, 2009. Thousands of protesters gathered at Puerto Rico's financial hub to demonstrate against Gov. Luis Fortuno and the layoffs of more than 20,000 public employees. Ricardo Arduengo/AP hide caption

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Republican presidential candidate Herman Cain speaks before Florida's straw poll at the Orange County Convention Center in Orlando on Saturday. Cain won the straw poll with 37 percent of the vote. Mark Wilson/Getty Images hide caption

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A flock of ibis flies at the Oak Creek Marsh, a former cattle pasture near the Kissimmee River, the headwaters of Florida's Everglades. Luis M. Alvarez/AP hide caption

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Republican presidential candidate Mitt Romney meets with supporters during the grand opening of his Florida campaign headquarters in Tampa on Friday. Brian Blanco/AP hide caption

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Gov. Luis Fortuno speaks at the annual meeting of the National Governors Association in July about the pipeline he wants to build in Puerto Rico. Michael Dwyer/AP hide caption

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