WAUKESHA, WI - AUGUST 12: Republican vice presidential candidate Rep. Paul Ryan (R-WI) speaks during a homecoming campaign rally at the Waukesha County Expo Center on August 12, 2012 in Waukesha, Wisconsin. Mitt Romney continues his four day bus tour a day after announcing his running mate, Rep. Paul Ryan (R-WI). (Photo by Justin Sullivan/Getty Images)