WASHINGTON, DC - NOVEMBER 04:  Americans for Prosperity Foundation chairman and  Koch Industries Executive Vice President David H. Koch listens to Republican presidential candidate and former Massachusetts Governor Mitt Romney during the Defending the American Dream Summit at the Washington Convention Center November 4, 2011 in Washington, DC. The conservative political summit is organized by Americans for Prosperity, which was founded with the support of Koch and his brother David H. Koch.  (Photo by Chip Somodevilla/Getty Images)