WASHINGTON - MAY 12:  Former Chairman of the Federal Reserve Board Alan Greenspan speaks to attendees of a real estate summit hosted by the National Association of Realtors on May 12, 2009 in Washington, DC. The summit, titled 'Advancing the US Economy' also featured FDIC Chair Sheila Bair. Getty Images logo Getty Images 6 months ago

WASHINGTON - MAY 12: Former Chairman of the Federal Reserve Board Alan Greenspan speaks to attendees of a real estate summit hosted by the National Association of Realtors on May 12, 2009 in Washington, DC. The summit, titled 'Advancing the US Economy' also featured FDIC Chair Sheila Bair.