** FILE ** Federal Reserve Chairman Ben Bernanke's testimony before Congress is shown on a television screen on the trading floor of the New York Stock Exchange, Tuesday, July 17, 2012. (AP Photo/Richard Drew)

Photo by: Richard Drew

** FILE ** Federal Reserve Chairman Ben Bernanke's testimony before Congress is shown on a television screen on the trading floor of the New York Stock Exchange, Tuesday, July 17, 2012. (AP Photo/Richard Drew)