** FILE ** Colorado Gov. John Hickenlooper is applauded by lawmakers as he signs the state's gun-control bill into law at the Capitol in Denver on Wednesday, March 20, 2013. (AP Photo/Ed Andrieski, Pool)

Photo by: Ed Andrieski

** FILE ** Colorado Gov. John Hickenlooper is applauded by lawmakers as he signs the state's gun-control bill into law at the Capitol in Denver on Wednesday, March 20, 2013. (AP Photo/Ed Andrieski, Pool)