For years gun runners have been supplying the Mexican drug cartels with assault rifles and small arms purchased by straw buyers in U.S. border towns but the narco insurgents now are obtaining heavier weaponry -- anti-tank missiles, hand grenades, C-4 explosives and shoulder-fired missiles -- through corrupt officials at military arsenals in Central America as reported by Tim Johnson for McClatchy Newspapers. The game's changing for the worse, and the United States still has failed to secure the border.
