President Obama speaks to reporters in the White House briefing room on Friday following a meeting with congressional leaders. Pablo Martinez Monsivais/AP hide caption

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President Obama is expected to nominate Gina McCarthy, currently assistant administrator with the Environmental Protection Agency, to head the agency on Monday. The nomination requires a Senate confirmation. Alex Brandon/AP hide caption

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Transportation Secretary Ray LaHood (left) answers questions during a briefing with White House Press Secretary Jay Carney on Friday. Win McNamee/Getty Images hide caption

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President Obama speaks about strengthening the middle class and the nation's struggle with gun violence at Hyde Park Academy in Chicago on Friday. M. Spencer Green/AP hide caption

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President Obama plays a learning game while visiting children at College Heights Early Childhood Learning Center on Thursday in Decatur, Ga. Obama's campaign-style trip this week was to end with a nonworking stop in Florida. Brendan Smialowski/AFP/Getty Images hide caption

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Mary Jo White, then U.S. Attorney for the Southern District of New York, speaks during a May 2001 press conference following guilty verdicts in the trial of four followers of Osama bin Laden that bombed two U.S. embassies in East Africa in 1998. President Obama intends to nominate White to head the Securities and Exchange Commission. Doug Kanter/AFP/Getty Images hide caption

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In the presidential debate on Oct. 16, Mitt Romney presented a hypothetical way to cap deductions and raise revenue. Spencer Platt/Getty Images hide caption

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President Obama looks over a roller coaster with K'Nex inventor and Chairman Joel Glickman (left) and President and CEO Michael Araten on Friday during a tour of the company in Hatfield, Pa. Susan Walsh/AP hide caption

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President Obama speaks during a Veterans Day ceremony in Arlington, Va., on Sunday. J. Scott Applewhite/AP hide caption

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Republican presidential nominee Mitt Romney and President Obama debate on Oct. 22 at Lynn University in Boca Raton, Fla. Win McNamee/Getty Images hide caption

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Both President Obama and rival Mitt Romney say the tax code is too complicated. But they haven't been specific about which tax breaks they want to eliminate. Tim Boyle/Getty Images hide caption

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President Obama greets supporters during a campaign rally on Saturday in Milwaukee. Scott Olson/Getty Images hide caption

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President Obama toasts others at the Dubliner Restaurant and Pub in Washington, D.C., on March 17. Joshua Roberts/Getty Images hide caption

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Republican presidential nominee Mitt Romney campaigns at PR Machine Works in Mansfield, Ohio, on Monday. Charles Dharapak/AP hide caption

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