I watched this documentary last night. Wow, it nails the reasons why marijuana is illegal in the USA. There are two very powerful lobby groups at work - the pharmaceutical industry who stand to lose billions if the natural plant gets a medicinal foothold - and, surprisingly, the US private prison system whose profits are in serious jeopardy if possession is decriminalized. Some states in the USA have legal contracts with minimum quotas of prisoners to supply to these commercial prisons... Few politicians are brave enough to tackle the issue, and Obama has turned out to be the most manipulated President in history on this issue. Not just the subject material, this is a really well made documentary that has meticulously sought out relevant archival material and conducted many interviews with experts and retired law enforcement personnel who can now speak their minds. A riveting two hours that really held my attention. Seek out this film and watch it.