Former Federal Reserve Chairman Alan Greenspan, left, speaks with members of the House Oversight and Government Reform Committee, from second from left, Rep. Darrell Issa, R-Calif., Rep. Tom Davis, R-Va., and committee chairman Rep. Henry Waxman, D-Calif., on Capitol Hill in Washington, Thursday, Oct. 23, 2008, after the committee's hearing is looking into the federal role of the financial markets. (AP Photo/Lawrence Jackson)

Darrell E. Issa