WASHINGTON, DC - DECEMBER 10:  Federal Reserve Board Chairman Ben Bernanke (L) and Janet Yellen (R), Vice Chair and President Obama's nominee fto succeed Bernanke, listen during a meeting of the Board of Governors of the Federal Reserve System to discuss the final version of the so-called "Volcker Rule" December 10, 2013 in Washington, DC. The rule was adopted unanimously during the meeting that will ban proprietary trading by large banks.  (Photo by Alex Wong/Getty Images)