Congress's first attempt to set immigration policy came in 1790 with the enactment of the Naturalization Act of 1790. This Act restricted naturalization to "free white persons" of "good moral character" and required the applicant to have lived in the country for two years prior to becoming naturalized. In 1795 an amendment increased the residency requirement to five years. The five-year requirement remains on the books to this day.

Upon ratification of the Fourteenth Amendment, all children born within the United States received citizenship at birth. In 1870 Congress broadened naturalization laws to allow African-Americans the right to become naturalized citizens. Asian Americans, however, did not receive such a right for many years. Xenophobia from an influx of Asians between 1850 and 1882 prompted Congress to pass the Chinese Exclusion Act, which restricted further Chinese immigration.

In 1921 Congress passed the Emergency Immigration Act, creating national immigration quotas, which gave way to the Immigration Act of 1924, capping the number of permissible immigrants from each country in a manner proportional to the number already living within the United States. The aggregate number from the eastern hemisphere could not eclipse 154,227 immigrants. Franklin D. Roosevelt's Administration essentially closed to the country to immigration essentially during the Great depression, drastically reducing the numbers per country that could enter the United States.