More than 90% of guns seized at the border or after raids and shootings in Mexico have been traced to the United States, according to the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives. Last year, 2,455 weapons traces requested by Mexico showed that guns had been purchased in the United States, according to the ATF. Texas, Arizona and California accounted for 1,805 of those traced weapons.
U.S. guns arm Mexican drug cartels
