Cartel Plot: Use U.S. Guns for Massive Mexico City Attack

Cartel Plot: Use U.S. Guns for Massive Mexico City Attack: In October of 2008, the boss of Mexico's deadly Sinaloa Cartel proposed buying heavy weapons from returning U.S. troops -- and then using those arms to stage a massive attack in Mexico City. "Let it be a government building," the chief said, "it doesn?t matter whose."