The Tucson massacre that wounded Rep. Gabrielle Giffords and killed six others did not stop Arizona gun dealers from selling high-powered semiautomatics last week to buyers who said they couldn't pass background checks. The sales were captured on undercover video by private detectives working for Mayor Bloomberg's crusade against illegal guns. The detectives went to the Crossroads of the West gun show in Phoenix on Jan.23 to expose the deadly loopholes in America's gun... (GunPolicy.org)