Controlled Substances Act (1970)

Title II of the Comprehensive Drug Abuse Prevention and Control Act of 1970, signed by President Richard Nixon on October 27, 1970. The CSA consolidated prior federal drug statutes — including the Harrison (1914), Marihuana Tax (1937), Boggs (1951), and Narcotic Control (1956) Acts — into a single scheduling system administered by the Department of Justice. Cannabis was placed in Schedule I, the most restrictive tier, defined as having high abuse potential, no accepted medical use, and no safe use under medical supervision. Assistant Secretary of Health Roger O. Egeberg recommended this placement as provisional, pending findings of the National Commission on Marihuana and Drug Abuse. Chaired by former Pennsylvania Governor Raymond P. Shafer and known as the Shafer Commission, the panel delivered its report, Marihuana: A Signal of Misunderstanding, on March 22, 1972. After two years of hearings and over fifty commissioned studies, it concluded that "neither the marihuana user nor the drug itself can be said to constitute a danger to public safety" and recommended removing criminal penalties for personal possession. Declassified White House tapes later showed Nixon had pressured Shafer to reach the opposite conclusion; the administration rejected the report and Schedule I placement remained — a classification that framed all subsequent federal cannabis policy. (See Part 6 for current scheduling status.)