President Barack Obama greets Paul Volcker, Chair of the President's Economic Recovery Advisory Board, after Obama signed the Dodd-Frank Wall Street Reform and Consumer Protection financial reform bill at the Ronald Reagan Building in Washington, Wednesday, July 21, 2010. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

President Barack Obama greets Paul Volcker, Chair of the President's Economic Recovery Advisory Board, after Obama signed the Dodd-Frank Wall Street Reform and Consumer Protection financial reform bill at the Ronald Reagan Building in Washington, Wednesday, July 21, 2010. (AP Photo/Charles Dharapak)