Rep. Elizabeth Esty, D-Conn., who represents Newtown, Conn., and Rep. Ron Barber, D-Ariz., who took over for Rep. Gabby Giffords who was severely injured in a shooting in Tuscon, Ariz., sit together at a special House Democratic Steering and Policy Committee hearing on gun violence on Capitol Hill in Washington, Wednesday, Jan. 16, 2013. The lawmakers heard from a witness panel that included Newtown, Conn. School Superintendent Janet Robinson, Emily Nottingham, mother of Tucson shooting victim Gabe Zimmerman, Chaska, Minnesota Police Chief Scott Knight, and Philadelphia Mayor Michael Nutter. Photo: J. Scott Applewhite, AP Photo/J. Scott Applewhite / Associated Press