Three more weapons from Fast and Furious have turned up at crime scenes in Mexico, CBS News has learned, as the toll from the controversial federal operation grows. According to Justice Department tracing documents obtained by CBS News, all three guns are WASR-10 762-caliber Romanian rifles. Two were purchased by Fast and Furious suspect Uriel Patino in May and July of 2010. Sean Steward, who was convicted on gun charges in July 2012, purchased a third. The rifles were traced yesterday to the Lone Wolf gun shop in Glendale, Ariz. snip The government first denied any guns had been allowed...