Cass Sunstein is the director of the Office of Information and Regulatory Affairs. A new study finds that the office has altered more federal regulations under President Obama than it did under George W. Bush. AP hide caption

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Republican presidential candidate Mitt Romney arrives with his wife, Ann, for a rally at the American Polish Cultural Center earlier this month in Troy, Mich. The former Massachusetts governor is in effect the front-runner in the race for the GOP nomination, despite holding fewer rallies, town hall meetings or media appearances than other candidates. Scott Olson/Getty Images hide caption

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President Obama prepares to board Air Force One before departing Andrews Air Force Base for Philadelphia on Tuesday. He heads to Hawaii this week, where the U.S. is hosting the Asia-Pacific Economic Cooperation forum. Larry Downing/Reuters /Landov hide caption

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Republican presidential hopeful Herman Cain arrives at a summit for the conservative Americans For Prosperity foundation in Washington on Friday. Days after sexual harassment allegations surfaced, he was greeted here with standing ovations. Nicholas Kamm/AFP/Getty Images hide caption

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Protesters demonstrate last month against the construction of the Keystone XL oil pipeline outside the W Hotel in San Francisco, before the arrival of President Obama, who was holding a fundraiser. Justin Sullivan/Getty Images hide caption

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