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epa03252998 US Chairman of the Federal Reserve Ben Bernanke prepares to testify before a Joint Economic Committee Hearing on 'The Economic Outlook' in the Dirksen Senate Office Building on Capitol Hill in Washington, DC, USA, 07 June 2012. Economists are watching Bernanke for signals that he might add another round of stimulus to the U.S. economy. EPA/JIM LO SCALZO