The U.S. Congress passed the Animal Welfare Act (AWA) in 1966 to set standards for the care and treatment of certain types of animals. The law was amended significantly in 1970, 1976, 1985, and 1990, including a number of amendments that significantly increased the regulation of animals involved in research. Provisions of the Act, its standards and regulations, are administered by the USDA's Animal and Plant Health Inspection Service (APHIS).
AWA - USDA Summary
AWA
(7 U.S.C. §§ 2131 - 59)
AWA - Legislative History