Through a national origins quota, the Immigration Act of 1924 set a cap on the number of immigrants who might enter the country. Two percent of each nationality's total population in the United States as of the 1890 census was eligible for immigration visas under the quota.
This law introduced enhanced "national origins" quotas, a severely restrictive and quantitatively discriminatory mechanism, to further restrict immigration. Up until 1965, the major method of determining whether immigrants might enter the country was the quota system.
a bill restricting immigration to the United States. The Emergency Quota Act limited the number of immigrants from every nation accepted each year to 3% of the population of its citizens living in the United States.
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