Grass Roots.

The article looks at marijuana legalization in the U.S. as of December 2012, citing the 2012 state referendums on the subject which passed in Colorado and Washington. It describes changes that have already occurred in several states that previously legalized medical marijuana, or marijuana consumed pursuant to a doctor's prescription. It notes that marijuana possession and sale continue to be illegal under federal law and discusses possible federal-state conflicts over the issue. Topics include the marijuana-growing industry, revenue from taxing marijuana sales, and polls of Americans' attitudes on the topic.