What was the purpose of the Johnson-reed act?

The Johnson-Reed Act, officially known as the Immigration Act of 1924, aimed to limit the number of immigrants allowed into the United States, particularly from Southern and Eastern Europe, as well as from Asia. It established a quota system based on national origins, favoring immigrants from Northern and Western Europe, reflecting the nativist and xenophobic sentiments of the time. The act sought to preserve the racial and ethnic composition of the U.S. population and significantly reduced overall immigration levels.