Federal Reserve Board Chair Janet Yellen gestures as she testifies during a Senate Banking, Housing and Urban Affairs Committee hearing while delivering the Federal Reserves semiannual Monetary Policy Report on Capitol Hill Thursday. Mark Wilson/Getty Images hide caption

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The Senate has approved Janet Yellen as the next head of the Federal Reserve. At a ceremony commemorating the Fed's centennial last month, Yellen sat with (from left-to-right) former chairmen Paul Volker and Alan Greenspan, and current Fed leader Ben Bernanke. Mark Wilson/Getty Images hide caption

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Janet Yellen during her confirmation hearing earlier this month. She's expected to win Senate approval to take over as head of the Federal Reserve. Brendan Smialowski /AFP/Getty Images hide caption

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Janet Yellen, President Obama's nominee to become the next chairman of the Federal Reserve Board, is sworn in Thursday on Capitol Hill for her confirmation hearing. Jacquelyn Martin/AP hide caption

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President Obama's nominee to lead the Federal Reserve, Janet Yellen, stands in the State Dining Room of the White House on Wednesday. If Yellen's nomination is confirmed by the Senate, she'll be the first woman to head the Federal Reserve System. Charles Dharapak/AP hide caption

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President Obama and House Speaker John Boehner sit together at a Capitol event in February dedicating a statue of civil rights icon Rosa Parks. J. Scott Applewhite/AP hide caption

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Federal Reserve Board Vice Chairman Janet Yellen is considered a top candidate to replace Ben Bernanke now that Lawrence Summers has withdrawn his name for contention for the Fed's top job. Robert Galbraith/Reuters/Landov hide caption

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