The Agricultural Adjustment Act, which restricts agricultural production through government purchase of livestock for slaughter and paying subsidies to farmers when they remove land from planting, is signed into law by President Franklin D. Roosevelt.

The Agricultural Adjustment Act (AAA) of 1933 was a United States federal law of the New Deal era designed to boost agricultural prices by reducing surpluses. The government bought livestock for slaughter and paid farmers subsidies not to plant on part of their land. The money for these subsidies was generated through an exclusive tax on companies that processed farm products. The Act created a new agency, the Agricultural Adjustment Administration, also called "AAA" (1933–1942), within the U.S. Department of Agriculture, to oversee the distribution of the subsidies. The Agriculture Marketing Act, which established the Federal Farm Board in 1929, was seen as an important precursor to this act. The AAA, along with other New Deal programs, represented the federal government's first substantial effort to address economic welfare in the United States.