The monstrous shooting at Pulse, an LGBTQ nightclub in Orlando, Florida, two Sundays ago has brought America's lax gun laws back into tragic focus. The killer, 29-year-old Omar Mateen, used a 9mm Glock 17 and a Sig Sauer MCX assault rifle that he purchased legally — despite investigations in 2013 and 2014 by the Federal Bureau of Investigations for his potential ties to terrorism. The U.S. has the highest rate of gun ownership in the world, according to data... (GunPolicy.org)