This document discusses the history of drug regulation laws in the United States. It begins by covering early federal laws like the 1906 Pure Food and Drug Act that required labeling of drug contents but did little to regulate safety. The 1938 Food, Drug, and Cosmetic Act and later amendments in 1951 and 1962 strengthened regulations by requiring pre-market approval of drugs as safe and effective. The Controlled Substances Act of 1970 established a drug scheduling system to regulate substances based on abuse and medical potential. The document also discusses issues around legalization debates, prevention strategies, drug testing policies, and criticisms of discriminatory enforcement practices.