The Immigration and Nationality Act of 1965, also known as the Hart–Celler Act and more recently as the 1965 Immigration Act, is a landmark federal law passed by the 89th United States Congress and signed into law by President Lyndon B. Johnson. The law abolished the National Origins Formula, which had been the basis of U.S. immigration policy since the 1920s.Greenwood, M. J., & Ward, Z. (2015). Immigration quotas, World War I, and emigrant flows from the United States in the early 20th century. Explorations in Economic History, 55, 76–96. https://doi.org/10.1016/j.eeh.2014.05.001 The act formally removed de facto discrimination against Southern and Eastern Europeans as well as Asians, in addition to other non-Western and Northern European ethnic groups from the immigration policy of the United States.
