How did the u. S. Government change immigration restrictions during the 1920s?

By the passage of the National Origins Act of 1924

Explanation:

The United States government changed immigration restrictions during the !920s by the passage of the National Origins Acts in 1924 which introduced an immigration quota system of 2% of each nationality represented in the 1890 census.

they died because of a disease during the first spanish colonies.

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;