** FILE ** Part of a cache of seized weapons is displayed Jan. 25, 2011, at a news conference in Phoenix. The ATF received fire over a Phoenix-based gun-trafficking investigation called "Fast and Furious," in which agents allowed hundreds of guns into the hands of straw purchasers in hopes of making a bigger case. Two of those weapons were found in December at the fatal shooting of U.S. Border Patrol agent Brian Terry. (Associated Press)

Photo by: Matt York

** FILE ** Part of a cache of seized weapons is displayed Jan. 25, 2011, at a news conference in Phoenix. The ATF received fire over a Phoenix-based gun-trafficking investigation called "Fast and Furious," in which agents allowed hundreds of guns into the hands of straw purchasers in hopes of making a bigger case. Two of those weapons were found in December at the fatal shooting of U.S. Border Patrol agent Brian Terry. (Associated Press)