I think that with all the talk about the legalization of marijuana in Canada due to Justin Trudeau's stated intent to legalize it if he is elected and the Conservatives subsequent attack ads, it is good to reference the Senate Committee report that was completed in 2001. Here is a link to the summary. It's still a long read, but quite good. Sometimes I wonder if anyone in the government ever reads the reports the Senate puts out...
http://www.parl.gc.ca/Content/SEN/Committee/371/ille/rep/summary-e.pdf