What historical impact has legislation had on the availability (legality) of the drug (example: Harrison Narcotic Act)?

DRUGS, CRIMES 1 The occurrence, use and abuse of drugs in our society are evolving issues. Marijuana, a Schedule drug like heroin, lysergic acid diethylamide (LSD/acid), and ecstasy, was once widely viewed as a gateway drug and extremely dangerous for individuals (consumption) and society (public health and safety). However, currently 18 states, Alaska, Washington, Oregon, […]