Emergency Immigration Act of 1921

On May 19, 1921, the Emergency Immigration Act of 1921 was passed.   This Act limited the number of immigrants allowed to enter the US during a single year, and was the first such Act in US history.  This legislation limited immigration from Europe to 3% of each European nationality present in the US in 1910.  The Act did not have quotas for people born in the Western Hemisphere (which included Central and South America).  People who had lived the Western Hemisphere for at least one year could immigrate freely if they were otherwise eligible.