On May 24, Coolidge signed the Immigration Act of 1924 (also referred to as the Johnson-Reed Act), which implemented a national quota system that limited the number of immigrants allowed into the US, and it excluded immigrants from Asia.
Timeline:
1924 - Coolidge signs Johnson-Reed Act
Prevents immigration from Asia and establishes a quotas system
1952 - Truman vetoes McCarran-Walter Act (veto overridden by Congress)
Eliminates Asian exclusion and establishes a preference system for desirable ethnic groups
1965 - Johnson signs Hart-Celler Act
Eliminates policy of limiting immigration based on national origin
Note: See https://immigrationhistory.org/timeline for a description of immigration laws before 1924
Resources:
Johnson-Reed Act: https://history.state.gov/milestones/1921-1936/immigration-act
McCarran-Walter Act: https://history.state.gov/milestones/1945-1952/immigration-act
Hart-Celler Act: https://history.house.gov/Historical-Highlights/1951-2000/Immigration-and-Nationality-Act-of-1965
Coolidge’s Comments regarding Immigration: https://www.coolidgefoundation.org/blog/were-all-in-the-same-boat-now-coolidge-on-immigration
Truman’s Veto Comments: https://www.trumanlibrary.gov/public/Immigration_TrumanVeto.pdf
Johnson’s INA Signing Comments:http://www.lbjlibrary.org/lyndon-baines-johnson/timeline/lbj-on-immigration
Images:
https://drive.google.com/open?id=1gQD4VFtai7I0K47-d3F58Ffp9wn0fNzh
https://drive.google.com/open?id=1bfzS8eAMFA89LTE_gU3VkTZyxH5qV9Y1