The DEA Position On Marijuana - 420 Magazine
http://www.420magazine.com/forums/cannabis-facts-information/72887-dea-position-marijuana.html
Smoked Marijuana is Not Medicine
Marijuana is Dangerous to the User and Others
Marijuana as a Precursor to Other Drugs
there's much more... click the link, but be warned, 420 Magazine is a Marijuana Advocacy site.