"Sen. John McCain, R-Ariz., left, and Sen. Charles Schumer, D-N.Y., right, two of the authors of the immigration reform bill crafted by the Senate's bipartisan ""Gang of Eight,"" shakes hands on Capitol Hill in Washington, Thursday, June 27, 2013, prior to the final vote. The historic legislation would dramatically remake the U.S. immigration system and require a tough new focus on border security. (AP Photo/J. Scott Applewhite)"