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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President Obama addresses the 93rd American Legion National Convention at the Minneapolis Convention Center on Tuesday. Cory Ryan/Getty Images hide caption

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Texas Gov. Rick Perry, who recently joined the GOP presidential race, speaks Thursday with patrons at Popovers in Portsmouth, N.H. Darren McCollester/Getty Images hide caption

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Republican presidential hopeful Ron Paul, a Texas congressman, reacts after seeing several hundred people show up to see him Wednesday in Concord, N.H. Jim Cole/AP hide caption

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Bus Stop: President Obama waves before boarding his bus after having lunch and greeting people at The Old Market Deli on Monday, in Cannon Falls, Minn., during his three-day economic bus tour. Carolyn Kaster/AP hide caption

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President Obama may have to "destroy" the Republican image to be re-elected, says Republican strategist Ed Rogers. David Karp/AP hide caption

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