U.S. Federal Reserve

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Federal Reserve Chairman Ben Bernanke listens as he testifies on Capitol Hill in Washington, Wednesday, May 22, 2013, before the Joint Economic Committee hearing on "The Economic Outlook". Bernanke told Congress Wednesday that the U.S. job market remains weak and that it is too soon for the Federal Reserve to end its extraordinary stimulus programs. (Associated Press)

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**FILE** Federal Reserve Chairman Ben S. Bernanke speaks during a news conference in Washington on March 20, 2013. (Associated Press)

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Federal Reserve Chairman Ben S. Bernanke testifies on Capitol Hill in Washington on Wednesday, Feb. 27, 2013, before the House Financial Services Committee. (AP Photo/Carolyn Kaster)

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Federal Reserve Chairman Ben S. Bernanke gestures as he speaks during a news conference at the Federal Reserve Board in Washington on Wednesday, Dec. 12, 2012, following the Federal Open Market Committee meeting. (AP Photo/Manuel Balce Ceneta)

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Federal Reserve Chairman Ben Bernanke speaks Dec. 12, 2012, during a news conference at the Federal Reserve Board in Washington following the Federal Open Market Committee meeting. (Associated Press)

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Federal Reserve Chairman Ben Bernanke addresses a luncheon gathering of the Economic Club of New York on Nov. 20, 2012, in New York. (Associated Press)