"Mexico is also a major supplier of heroin, marijuana, and methamphetamine to the United States. Mexico is also a source and destination for money laundering activity and the U.S. Attorney General estimates that 64,000 of the 94,000 weapons recovered in Mexico over the last five years were traced from origins in the United States. Complementing the Government of Mexico‘s effort, Merida Initiative implementation accelerated in calendar year 2011 with major deliveries of equipment and training of just over $500 million dollars to help transform Mexico‘s judicial and security institutions."

Source

"International Narcotics Control Strategy Report: Volume I Drug and Chemical Control," Bureau for International Narcotics and Law Enforcement Affairs (Washington, DC: United States Department of State, March 2012), p. 317.
http://www.state.gov/document…