National Origins Formula
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The National Origins Formula was an American system of immigration quotas, between 1921 and 1965, which restricted immigration on the basis of existing proportions of the population. The goal was to maintain the existing ethnic composition of the United States. It had the effect of giving low quotas to Eastern and Southern Europe.
The 1921 [Emergency Quota Act] restricted immigration to 3% of foreign-born persons of each nationality that resided in the United States in 1910.
The Immigration Act of 1924, also called the National Origins Act, provided that for three years the formula would change from 3% to 2% and the basis for the calculation would be the census of 1890 instead of that of 1910. After June 30, 1927, total immigration from all countries will be limited to 150,000, with allocations by country based upon national origins of inhabitants according to the census of 1920. The quota system applied only to white immigrants. It aimed to reduce the overall number of unskilled immigrants, to allow families to re-unite, and to prevent immigration from changing the ethnic distribution of the population. The 1924 Act also included the Asian Exclusion Act, which limited immigration to persons eligible for naturalization. Since Asians were not eligible for naturalization, they were effectively banned. Immigration from Latin America was not restricted. Immigration from Africa, which had been permitted since 1870, was not affected.
The Immigration and Nationality Act of 1952 retained the National Origins Formula. It modified the ratios to be based on the 1920 census and eliminated racial restrictions, but retained restrictions by national origin. President Harry Truman vetoed it because of its continued use of national quotas, but the Act was passed over his veto. The quotas were in addition to 600,000 refugees admitted from Europe after World War II.
The National Origins Formula was abolished by the Immigration and Nationality Act of 1965, which marked a significant change in American immigration policy. It replaced the system with two quotas for the Western and Eastern hemispheres.
- David M. Reimers, Unwelcome Strangers (1998), 26
- Michael Lemay and Elliott Robert Barkan, eds., U.S. Immigration and Naturalization Laws and Issues: A Documentary History Greenwood Press, 1999
- John Lescott-Leszczynski, The History of U.S. Ethnic Policy and Its Impact on European Ethnics Westview Press, 1984