Cannabis was legal before 1937. The Hearst paper manufacturing (who supplied the paper to Hearst's Newspaper empire) and The Dupont co. (who made the chemicals to produce paper, and made plastics from crude) began a conspiracy to make all forms of Cannabis illegal. To wipe out the natural competition they banned hemp, using lies about marijuana as a drug. (Propaganda like: Reefer Madness). They convinced the public with no researched facts or extensive laboratory studies, and made sure Hemp/Cannabis didn't replace their business.
List of pages in CANNABIS: