Marijuana in California and Colorado: Highs and laws

Jerky progress towards legalisation
The Economist
Saturday, December 3, 2011

While it is allowed in some form in 16 states and Washington, DC, Colorado is the leader in trying to make medicinal pot a legitimate business. It has been legal since a voter-approved amendment to the state constitution in 2000, but the for-profit side only took off two years ago after the legislature allowed individual counties and towns more flexibility in interpreting the rules. Over a hundred have done so.