Federal Reserve Chairman Ben S. Bernanke (left) speaks with former Federal Reserve Chairman Paul Volcker before President Obama signs the Dodd-Frank Wall Street Reform and Consumer Protection Act at the Ronald Reagan Building and International Trade Center in Washington on Wednesday, July 21, 2010. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Federal Reserve Chairman Ben S. Bernanke (left) speaks with former Federal Reserve Chairman Paul Volcker before President Obama signs the Dodd-Frank Wall Street Reform and Consumer Protection Act at the Ronald Reagan Building and International Trade Center in Washington on Wednesday, July 21, 2010. (AP Photo/Charles Dharapak)