Search broadly: (for this, it's best to start with what HAS TO BE THERE) marijuana
Then narrow: Full Text Only
Then narrow more: Search Within Results> legalization AND United States
Document type matters: Book reviews might not help, but magazines and news articles are good!
The citation will be available on all of these articles - look for a Cite button! Saves you a LOT of work!
Full text magazines, newspaper articles, and ebooks
Social issues, articles, topic overviews, statistics, primary documents, links to websites, full-text magazines, newspaper articles.
Global Newsstream (1980 - current). Enables users to search the most recent global news content, as well as archives which stretch back into the 1980s featuring newspapers, newswires. blogs, and news sites in active full-text format.