Newsweek's Declassified blog reports that a high-level U.S. official says "there's mounting evidence that the illegal trafficking of high-powered U.S. weapons into Mexico is continuing unimpeded and may actually be increasing, despite repeated statements by Obama administration officials (including Secretary of State Hillary Clinton during a March visit to Mexico City) that they are forcefully addressing the issue." Recently, the Mexican military uncovered a large narco-paramilitary training camp in the Mexican border state of Nuevo Leon, reportedly a training base for the Los Zetas drug cartel. The camp contained a huge stockpile of weapons and ammunition, including grenade launchers and semi-automatic assault rifles, most of which could be traced back to purchase in the United States, military officials said.

Access Americas Quarterly's Spring 2010 charticle on narco-networks in the Americas.