** FILE ** Sponsors and family members of victims watch as Colorado Gov. John Hickenlooper signs gun-control bills into law at the Capitol in Denver on Wednesday, March 20, 2013. The bills, which place new restrictions on firearms, thrust Colorado into the national spotlight as a potential test of how far the country might be willing to go on new restrictions after the horror of the Newtown, Conn., and Aurora, Colo., shootings. (Associated Press)

Photo by: Ed Andrieski

** FILE ** Sponsors and family members of victims watch as Colorado Gov. John Hickenlooper signs gun-control bills into law at the Capitol in Denver on Wednesday, March 20, 2013. The bills, which place new restrictions on firearms, thrust Colorado into the national spotlight as a potential test of how far the country might be willing to go on new restrictions after the horror of the Newtown, Conn., and Aurora, Colo., shootings. (Associated Press)