Former MF Global Holdings Ltd. Chairman and CEO Jon Corzine testified on Capitol Hill in December. On Wednesday, a former executive at the company refused to answer lawmakers' questions about events in the run-up to the firm's collapse. Susan Walsh/AP hide caption

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A driver pumps gas into his Toyota Prius hybrid at a gas station in Sunnyvale, Calif., in 2007. Paul Sakuma/AP hide caption

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Republican presidential candidate Rick Santorum addresses an election night party in Steubenville, Ohio, on Tuesday. Jim Watson/AFP/Getty Images hide caption

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People walk past the Bank of Greece headquarters in Athens. Greece toughened its stance to push creditors to accept a debt swap and take heavy losses, just one day before the Thursday deadline for completion of the deal to avert default. Louisa Gouliamaki/AFP/Getty Images hide caption

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A welder at Specialty Fab in North Lima, Ohio, works March 1 on a piece of a compressor skid frame that is bound for the Ohio Shale project. Manufacturing companies such as Specialty Fab could receive tax breaks if a proposal from the Obama administration goes through. Jim Watson/AFP/Getty Images hide caption

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Boeing employees work on a plane engine at the company's factory in Everett, Wash. The Obama administration's corporate tax cut proposal would offer even deeper cuts for U.S. manufacturers like Boeing. Stephen Brashear/Getty Images hide caption

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GOP presidential candidates (from left) Rick Santorum, Newt Gingrich, Mitt Romney and Ron Paul place their hands over their hearts during the national anthem at the start of a debate in Florida last month. Chip Somodevilla/Getty Images hide caption

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In 2010, Arizona sold 22 buildings in its state capitol complex to help deal with budget deficits. Gov. Jan Brewer recently asked representatives to buy back three of the buildings, including the State House of Representatives (right), as the state's financial situation has improved. The Old Arizona Capitol Building (left) was not part of the deal. Ross D. Franklin/AP hide caption

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Kodak's Steven J. Sasson holds the world's first digital camera, which he built in 1975, at Kodak headquarters in Rochester, N.Y., in 2005. The company is now trying to sell about a thousand patents for digital photography to prevent bankruptcy. David Duprey/AP hide caption

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A trader walks in New York City's financial district on Sept. 12, a day when stocks fell early based on fears that the Greek government would default, then rallied on news that China might buy Italian debt. This year, what sent the market into a tailspin often took place overseas. Spencer Platt/Getty Images hide caption

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The flower auction house in Aalsmeer, the Netherlands, is one of the largest in the world — and a part of the country's strong export base. As Europe's debt crisis continues, the Dutch economy is feeling the effects of being heavily reliant on world trade. Pan Zhi/Xinhua /Landov hide caption

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Robert Khuzami (right), director of the U.S. Securities and Exchange Commission's Enforcement Division, announces that the SEC is charging six former top executives of Fannie Mae and Freddie Mac with securities fraud on Friday. Win McNamee/Getty Images hide caption

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Prime Minister Mario Monti has promised to crack down on tax evaders as part of reforms needed to convince markets that Italy can pay its debts. Michel Euler/AP hide caption

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