Former Arizona Rep. Gabrielle Giffords, center, who was seriously injured in the mass shooting that killed six people in Tucson, Ariz. two years ago, arrives with her husband Mark Kelly

 

              Former Arizona Rep. Gabrielle Giffords, center, who was seriously injured in the mass shooting that killed six people in Tucson, Ariz. two years ago, arrives with her husband Mark Kelly
Former Arizona Rep. Gabrielle Giffords, center, who was seriously injured in the mass shooting that killed six people in Tucson, Ariz. two years ago, arrives with her husband Mark Kelly, right, on Capitol Hill in Washington, Wednesday, Jan. 30, 2013, to give an opening statement before the Senate Judiciary Committee hearing on gun violence. Behind Giffords is Senate Judiciary Committee Chairman Sen. Patrick Leahy, D-Vt. (AP Photo/Susan Walsh)