Citation(s) from the GunPolicy.org literature library
USGAO. 2009 ‘Results in Brief.’ Firearms Trafficking: U.S. Efforts to Combat Arms Trafficking to Mexico Face Planning and Coordination Challenges, p. 3. Washington, DC: United States Government Accountability Office. 1 June
Results in Brief
Available evidence indicates a large proportion of the firearms fueling Mexican drug violence originated in the United States, including a growing number of increasingly lethal weapons.
While it is impossible to know how many firearms are illegally trafficked into Mexico in a given year, around 87 percent of firearms seized by Mexican authorities and traced over the past 5 years originated in the United States, according to data from ATF.
Around 68 percent of these firearms were manufactured in the United States, and around 19 percent were manufactured in third countries and imported into the United States before being trafficked into Mexico.