The House is preparing to vote Friday to revive a ban on semi-automatic guns, the first vote of its kind in years and a direct response to the firearms often used in the crush of mass shootings ripping through communities nationwide.
Once banned in the U.S., the high-powered firearms are now widely blamed as the weapon of choice among young men responsible for many of the most devastating mass shootings. But Congress allowed the restrictions first put in place in 1994 to expire a decade later, unable to muster the political support to counter the powerful gun lobby and reinstate the weapons ban.