The Emergency Quota Act of 1922 was a United States federal law that established a system of national origin quotas aimed at reducing immigration, particularly from Southern and Eastern Europe. This legislation was a response to growing nativist sentiments in the 1920s, reflecting concerns over cultural integration and economic competition from immigrants. By limiting the number of immigrants based on their country of origin, the Act marked a significant shift in U.S. immigration policy during a time of social change and economic prosperity.