As parents, students and lawmakers search for answers to how the shooting might have been prevented, there is growing support for stricter gun laws.
The nation should keep assault rifles out of the hands of anyone under 21, President Donald Trump says, defying his loyal supporters in the NRA.
Official: "We find ourselves in a more dangerous situation because our population of violent extremists has no difficulty gaining access to weapons that are quite lethal,"
Democrats are renewing calls for gun safety legislation after the deadly mass shooting in Las Vegas, but their pleas are falling on deaf ears in the Republican-controlled Congress.
ISIS is encouraging recruits in the U.S. take advantage of gun laws that allow people to buy firearms without having to present identification or submit to background checks.
Sales of semiautomatic rifles in California more than doubled this year, a dramatic increase gun rights advocates say was driven by the state's aggressive pursuit of gun-control measures in 2016.