A couple, dressed in Western attire, watch a ceremony at which Colorado Gov. John Hickenlooper signed the Civil Unions Act into law at the Colorado History Museum in Denver, Colo., on Thursday, March 21, 2013. (AP Photo/Brennan Linsley)

Associated Press
A couple, dressed in Western attire, watch a ceremony at which Colorado Gov. John Hickenlooper signed the Civil Unions Act into law at the Colorado History Museum in Denver, Colo., on Thursday, March 21, 2013. (AP Photo/Brennan Linsley)
A couple, dressed in Western attire, watch a ceremony at which Colorado Gov. John Hickenlooper signed the Civil Unions Act into law at the Colorado History Museum in Denver, Colo., on Thursday, March 21, 2013. (AP Photo/Brennan Linsley)