American drug policy suffers from a tremendous, harmful Catch-22: we don't know how dangerous or beneficial some drugs are because they aren't studied enough. And we can't study them easily because the federal government considers them to be too dangerous, and hence, research is bogged down by red tape.
Since the days of President Nixon's War on Drugs, which spawned the Controlled Substances Act in 1970, illicit substances have been placed into different categories or "schedules" based on their perceived harms and medical benefits. For example, cannabis, the psychedelic LSD and heroin are all lumped into schedule 1, a tier considered by the Drug Enforcement Agency (DEA) to be substances with "no currently accepted medical use and a high potential for abuse."
