Some funny historical information about how criminalization of marijuana came about is below. Also for reference I'm linking to Glenn Greenwald's white paper on the effects of drug decriminalization in Portugal. In sum by just about every measure it's been a resounding success. Drug usage down in many categories, drug related mortality and diseased decreased, etc. None of the nightmare scenarios of the critics have materialized, from widespread increases in usage to the assertion that Portugal would become a drug haven for tourists. All these positive changes while reducing the costs to the taxpayers. Not bad. We need to do the same.