"WASHINGTON, DC - APRIL 16:  Speaker of the House John Boehner cries during the dedication of a US Capitol meeting room to former Congresswoman Gabrielle Giffords' staffer Gabriel ""Gabe"" Zimmerman, who was shot and killed in the 2011 shooting in Tucson, on Capitol Hill Tuesday April 16, 2013. (Photo by Melina Mara/The Washington Post)"