World Fact Book
 

I found this while surfing around, kind of interesting...

http://www.cia.gov/cia/publications/factbook/

United States:

consumer of cocaine shipped from Colombia through Mexico and the Caribbean; consumer of heroin, marijuana, and increasingly methamphetamine from Mexico; consumer of high-quality Southeast Asian heroin; illicit producer of cannabis, marijuana, depressants, stimulants, hallucinogens, and methamphetamine; money-laundering center
:thumbsup