In 1921 and in 1924 Congress restricted immigration entirely from what region?

In 1921 and 1924, Congress implemented Immigration restrictions that targeted immigrants from Asia, effectively barring immigration from the entire region. The Immigration Act of 1924, also known as the Johnson-Reed Act, established quotas that severely limited the number of immigrants from countries outside Western Europe and excluded Asian immigrants altogether. This legislation reflected the nativist sentiments of the time and aimed to preserve the racial composition of the United States.