Donald Kohn, vice chairman of the U.S. Federal Reserve, righ

UNITED STATES - MARCH 04: Donald Kohn, vice chairman of the U.S. Federal Reserve, right, listens during a hearing of the Senate Banking Committee in Washington, D.C., U.S., on Tuesday, March 4, 2008. Appearing before the committee with Kohn, from left to right are; Sheila Bair, chairman of the Federal Deposit Insurance Corp., John Dugan, comptroller of the currency for the U.S. Treasury, John Reich, director of the U.S. Office of Thrift Supervision, and JoAnn Johnson, chairman of the National Credit Union Administration. U.S. Senator Christopher Dodd, the chairman of the committee, pressed federal bank watchdogs on why they permitted poor mortgage underwriting and ``excessive'' risk by lenders in the subprime crisis. (Photo by Carol T. Powers/Bloomberg via Getty Images)