PHOENIX - A U.S. senator is examining a claim that two guns sold in purchases sanctioned by federal firearms agents were later used in a December shootout that left a Border Patrol agent dead near the Arizona-Mexico border. Republican Sen. Charles Grassley of Iowa said in a letter provided Monday to The Associated Press he had received information that appears to partially corroborate the claim received by members of the Senate Judiciary Committee about the... (GunPolicy.org)