Mexico is the largest foreign supplier of marijuana and methamphetamine to the U.S. market.
Although not all of it originates there, roughly 70% of all cocaine entering the United States comes through Mexico.
Bottom Line: If you’re going to fight a “war on drugs” (and I’m not saying you should), then Mexico is where it should be fought, not Colombia or Asia, and certainly not in pharmacies.
Source: CIA World Factbook.