Weapons Traffic: An American Gun in Mexico

A disturbing detective story of how a five-foot long, semi-automatic sniper rifle was bought and sold by a "gun-collecting" FBI agent in El Paso, Texas and ended up with a drug cartel in Mexico.

An American Gun in Mexico - WSJ.com: "How does a weapon made in Tennessee, sold in Missouri and traded in Texas end up at a drug shootout in Chihuahua?"