quota definition law
1 Summary of 1920s Quota Laws.  2 Emergency Quota Law of May 19, 1921 (42 Statutes-at-Large 5) 3  The first quantitative immigration law.  Limited the number of aliens of any nationality entering the United States to three percent of the foreign-born persons of that nationality who lived in the United States in 1910.
Emergency Quota Act. The Emergency Quota Act, also known as the Emergency Immigration Act of 1921, the Immigration Restriction Act of 1921, the Per Centum Law, and the Johnson Quota Act (ch. 8, 42 Stat. 5 of May 19, 1921) restricted immigration into the United States.