Federal Reserve Chairman Ben Bernanke appears before the House Financial Services Committee to deliver his twice-a-year report to Congress on the state of the economy, Wednesday, July 18, 2012. Bernanke told lawmakers that the Federal Reserve's efforts to bolster growth have helped lift the U.S. economy out of the recession but he acknowledged that growth remains weak and the Fed can only do so much. (AP Photo/J. Scott Applewhite)