The National Origins Act (1924), also called the Johnson-Reed Act, was a federal law that capped immigration using quotas based on national origin, deliberately limiting arrivals from Southern and Eastern Europe and effectively excluding Asian immigrants, marking the height of 1920s nativism.
The National Origins Act of 1924 (you'll also see it called the Johnson-Reed Act or the Immigration Act of 1924) was Congress's answer to decades of nativist pressure. It capped each country's annual immigration at 2% of how many people from that country were living in the U.S. in 1890. That census year was not random. In 1890, most immigrants were from Northern and Western Europe, so the formula automatically shrank quotas for Italians, Poles, Greeks, Russian Jews, and other "new immigrants" from Southern and Eastern Europe. The law also barred nearly all immigration from Asia, including Japan.
Think of it as nativism written into math. Instead of openly saying "we want fewer Italians and more Brits," Congress built a quota formula that produced exactly that result. It ended the era of mass European immigration that had fueled American cities since the Gilded Age, and the quota system it created stayed in place until 1965.
This term lives in Unit 7 (Progressivism to WWII, 1890-1945), specifically Topic 7.7 on the 1920s. The decade gets tested as a clash between change and backlash. The same years that gave you radio, cinema, and a booming consumer culture (KC-7.2.I.A's national mass culture) also produced a defensive reaction against everything that felt foreign: immigrants, radicals, and urban diversity. The National Origins Act is the single clearest piece of evidence for that backlash. It connects directly to the APUSH themes of Migration and Settlement (MIG) and American and National Identity (NAT), and it's a go-to data point whenever an essay asks about nativism, the tensions of the 1920s, or continuity in anti-immigrant policy across periods.
Keep studying APUSH Unit 7
Emergency Quota Act of 1921 (Unit 7)
The 1921 act was the rough draft and the 1924 act was the final version. The Emergency Quota Act introduced the quota idea (3% of the 1910 census); the National Origins Act tightened it to 2% and rolled the baseline back to 1890 to squeeze Southern and Eastern Europeans even harder. If you can explain why Congress changed the census year, you understand the law's whole purpose.
Bolshevik Revolution and the Red Scare (Unit 7)
After the 1917 Bolshevik Revolution, many Americans linked immigrants, especially Eastern Europeans, with radicalism and Bolshevism. The Red Scare of 1919-1920 turned that fear into political momentum, and the quota laws of 1921 and 1924 turned it into permanent policy. Restriction was the long-term sequel to the Palmer Raids.
Chinese Exclusion Act of 1882 (Unit 6)
This is your continuity argument. The U.S. had been excluding Asian immigrants by law since 1882, and the National Origins Act extended that exclusion to nearly all of Asia. A DBQ on immigration policy across periods practically begs for this 1882-to-1924 throughline.
Second Ku Klux Klan and Birth of a Nation (Unit 7)
The revived 1920s Klan, supercharged by the film Birth of a Nation (1915), targeted immigrants, Catholics, and Jews, not just Black Americans. The Klan's millions of members were the popular face of the same nativism that the National Origins Act made into federal law. Pair them as social movement plus legislation.
No released FRQ has used "National Origins Act" verbatim, but it's a workhorse piece of evidence. In multiple choice, expect a stimulus (a nativist cartoon, a quota table, or an excerpt from a restrictionist speech) followed by questions about causes of 1920s immigration restriction or how it compares to earlier exclusion. In essays, it does two jobs. For a 1920s tensions prompt, it's concrete proof of the nativist backlash alongside the Red Scare and the second KKK. For a continuity-and-change prompt on immigration, it sits in a chain from the Chinese Exclusion Act (1882) through the Emergency Quota Act (1921) to the Immigration and Nationality Act of 1965. Don't just name-drop it. Explain the mechanism (2% quotas pegged to the 1890 census) and why that design discriminated.
Both are 1920s quota laws, and the exam loves the distinction. The Emergency Quota Act (1921) capped immigration at 3% of each nationality's U.S. population in the 1910 census. The National Origins Act (1924) cut that to 2% and moved the baseline back to 1890, before the big wave of Southern and Eastern European arrivals. The 1921 law restricted immigration; the 1924 law engineered who got in. If a question emphasizes the deliberate targeting of "new immigrants" or Asian exclusion, the answer is 1924.
The National Origins Act of 1924 (Johnson-Reed Act) set immigration quotas at 2% of each nationality's U.S. population as counted in the 1890 census.
Congress chose the 1890 census on purpose, because it predated the huge wave of Southern and Eastern European immigration, so those groups got tiny quotas.
The law effectively banned immigration from Asia, extending the exclusion the U.S. had started with the Chinese Exclusion Act of 1882.
It represents the legal peak of 1920s nativism, fueled by the Red Scare, the second KKK, and postwar fears that immigrants brought radicalism.
The quota system it created lasted until the Immigration and Nationality Act of 1965 replaced national-origin quotas, making it a strong continuity-and-change anchor.
On essays, use it as evidence for the 1920s clash between a modern mass culture and a defensive backlash against immigrants and urban diversity.
It limited annual immigration from each country to 2% of that nationality's U.S. population in the 1890 census and barred nearly all immigration from Asia. The formula deliberately favored Northern and Western Europeans while slashing quotas for Southern and Eastern Europeans.
No. It restricted immigration through quotas rather than ending it, and immigration from the Western Hemisphere (including Mexico and Canada) was not subject to the quota system. The near-total ban applied to Asian immigrants, who were almost completely excluded.
The Emergency Quota Act (1921) set quotas at 3% of each nationality's 1910 census numbers; the National Origins Act (1924) lowered quotas to 2% and used the 1890 census instead. The 1924 baseline change is what made the law so discriminatory against Southern and Eastern Europeans.
Yes. National Origins Act, Johnson-Reed Act, and Immigration Act of 1924 are all names for the same law. The exam can use any of the three, so recognize all of them.
It's the clearest evidence of 1920s nativism in Unit 7, Topic 7.7, and it anchors continuity arguments stretching from the Chinese Exclusion Act of 1882 to the Immigration and Nationality Act of 1965. Knowing the 2% quota and the 1890 census baseline lets you explain how the law worked, which is what essay rubrics reward.
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
Review units, study guides, and course resources.
Check this vocabulary in multiple-choice context.
Apply key concepts in written AP responses.
Estimate the exam score you are working toward.
Review the highest-yield facts before practice.
Put the full course together before test day.