WASHINGTON, DC - JUNE 20: Sen. Bob Corker (L) (R-TN) and Sen. John Hoeven (R) (ND) discuss their immigration agreement outside the Senate chamber June 20, 2013 in Washington, DC. Corker and Hoeven carved out an agreement designed to fortify border security with the "Group of Eight", a bipartisan group of Senators, that drafted an overhaul of U.S. immigration laws. (Photo by Win McNamee/Getty Images)