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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President Obama waves to the crowd after speaking at a GM plant Friday in Michigan. Obama and South Korean President Lee Myung-bak visited the plant to promote a free trade agreement.

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This steel plant in Weirton, W.Va., was idled in 2009. The United Steelworkers union worries that a trade deal signed this week could result in more jobs lost.

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President Obama speaks about job creation and the economy at the International Brotherhood of Electrical Workers Local No. 5 Training Center in Pittsburgh on Tuesday.

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Republican presidential hopeful Mitt Romney speaks to Citadel cadets and supporters on campus Friday in Charleston, S.C. The former Massachusetts governor, known more for his business acumen than his foreign-policy experience, sought to show he has what it takes to be commander in chief.

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Mitt Romney, shown in 1993, is the former CEO of Bain & Co. In the 1980s, he started an investment fund called Bain Capital. His supporters say that's where he learned to solve big problems, create jobs and expand companies. His opponents say he made money by shutting down factories, occasionally driving companies into bankruptcy.

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President Obama on Thursday visited the Brent Spence Bridge, which has been called "functionally obsolete." The president pressed Congress to pass his jobs act, arguing that if the country doesn't invest in restoring the bridge and other infrastructure now, it will pay for it later. Pablo Martinez Monsivais/AP hide caption

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President Obama meets with Turkish Prime Minister Recep Tayyip Erdogan on Tuesday in New York City. The two men discussed the Palestinian issue only after reporters had left the room. Pool/Getty Images hide caption

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President Obama addresses the Millennium Development Goals Summit at the United Nations headquarters in 2010. Emmanuel Dunand/AFP/Getty Images hide caption

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President Obama speaks in the Rose Garden on Wednesday, flanked by U.S. Chamber of Commerce Chief Operating Officer David Chavern (left) and AFL-CIO President Richard Trumka. The business community and unions have pulled Obama in opposite directions over the last couple years. Evan Vucci/AP hide caption

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