Firearms Trafficking: U.S. Efforts to Combat Arms Trafficking to Mexico
http://www.gao.gov/new.items/d09709.pdf
87% of firearms seized by Mexican authorities from drug traffickers in the last 5 years originated in the U.S. This report examines the types and sources of these firearms, key challenges confronting U.S. government efforts to combat illicit sales of firearms from gun shops and gun shows in southwest border states, and efforts at collaboration with Mexican authorities to stop gun trafficking. From the Government Accountability Office
