The Immigration and Nationality Act of 1965 (Hart-Celler Act), signed by Lyndon Johnson, abolished the national origins quota system and prioritized family reunification and skilled workers, triggering the dramatic rise in immigration from Latin America and Asia that reshaped America after 1980.
The Immigration and Nationality Act of 1965, usually called the Hart-Celler Act, was Lyndon B. Johnson's overhaul of U.S. immigration law. Since 1924, the U.S. had used the national origins quota system, which handed out immigration slots based on where Americans' ancestors came from. In practice, that meant huge quotas for Western Europe and almost nothing for Asia, Africa, and Southern and Eastern Europe. Hart-Celler scrapped that system entirely. In its place came preferences for family reunification (relatives of people already in the U.S.) and for immigrants with valuable job skills.
The law's effects took a few decades to fully show up, which is why APUSH tests it in Unit 9 even though it passed in 1965. Once family reunification became the main pathway, immigration from Latin America and Asia increased dramatically. Each new immigrant could sponsor relatives, who could sponsor more relatives, and the demographic makeup of the country shifted in ways the law's authors did not predict. By the 1980s and beyond, these new immigrants were reshaping American culture and supplying the economy with an essential labor force.
This term lives in Topic 9.5 (Migration and Immigration) in Unit 9: Globalization and Contemporary America, 1980-Present, supporting learning objective APUSH 9.5.A, which asks you to explain the causes and effects of domestic and international migration over time. Hart-Celler is the cause behind the essential knowledge statement KC-9.2.II.B, which says international migration from Latin America and Asia increased dramatically and that new immigrants affected U.S. culture and supplied an important labor force. If an exam question asks WHY post-1980 America became so much more diverse, the 1965 act is your answer. It also connects beautifully to the Migration and Settlement theme that runs through the entire course, from Chinese Exclusion to the 1924 quotas to today, making it perfect evidence for continuity-and-change essays about who gets to become American.
Keep studying APUSH Unit 9
National Origins Formula (Unit 7)
The 1924 national origins quota system is exactly what Hart-Celler killed. The 1924 law rationed immigration by ancestry to favor Northern and Western Europeans; the 1965 law replaced ancestry with family ties and skills. Knowing both gives you a ready-made change-over-time argument about nativism and immigration policy.
Chinese Exclusion Act (Unit 6)
The 1882 Chinese Exclusion Act was the first major federal law banning a group by national origin, and Hart-Celler is the bookend that ended race-based immigration restriction. Together they frame an 80-year arc from exclusion to openness, which is gold for an LEQ on immigration policy.
Bracero Program (Units 7-8)
The Bracero Program (1942-1964) brought Mexican laborers in as temporary guest workers and ended right before Hart-Celler passed. Both shaped Latin American migration patterns, and the contrast (temporary labor vs. permanent family-based immigration) helps explain rising migration from Latin America.
Family Reunification (Unit 9)
Family reunification is the engine inside Hart-Celler. Because relatives of current residents got priority, immigration became self-reinforcing through chain migration, which is the mechanism behind the demographic shifts described in KC-9.2.II.B.
On the exam, Hart-Celler usually shows up as the cause behind a Unit 9 effect. A typical multiple-choice setup gives you a chart of immigration by region (Europe falling, Latin America and Asia rising) or an excerpt about late-20th-century demographic change, then asks which development best explains the pattern. The answer is the 1965 act's end of national origins quotas. For free-response writing, it's strong evidence in any LEQ or DBQ about immigration policy, migration, or cultural change over time. No released FRQ has required this term by name, but the highest-scoring continuity-and-change essays on immigration use it as the turning point between the restrictive quota era (1920s-1960s) and the diverse immigration of contemporary America. Your job is to do more than name-drop it. Explain the mechanism, that replacing quotas with family reunification opened the door to Latin America and Asia.
These two laws are opposites, and mixing them up flips your answer. The 1924 act CREATED the national origins quota system to restrict immigration and favor Northern and Western Europeans, reflecting 1920s nativism. The 1965 Hart-Celler Act ABOLISHED that system and replaced it with family and skill preferences. Quick check: 1924 closes the door, 1965 reopens it. If a question describes rising Asian and Latin American immigration, that's 1965; if it describes quotas favoring 'old stock' Europeans, that's 1924.
The Immigration and Nationality Act of 1965 (Hart-Celler Act) abolished the national origins quota system that had governed U.S. immigration since 1924.
It replaced ancestry-based quotas with preferences for family reunification and skilled workers, which made immigration self-sustaining through chain migration.
Its biggest effect was the dramatic increase in immigration from Latin America and Asia, which is exactly what essential knowledge KC-9.2.II.B describes for the post-1980 era.
New immigrants reshaped American culture and supplied the economy with an important labor force, the two effects APUSH 9.5.A wants you to be able to explain.
Although it passed in 1965 under LBJ, APUSH tests its effects in Unit 9 because the demographic transformation showed up most clearly after 1980.
It works as the turning point in continuity-and-change essays running from the Chinese Exclusion Act (1882) through the 1924 quotas to contemporary immigration.
It abolished the national origins quota system from 1924 and replaced it with an immigration system that prioritized family reunification and skilled workers. The result was a dramatic increase in immigration from Latin America and Asia in the following decades.
Yes. Hart-Celler is just the common name for the Immigration and Nationality Act of 1965, named after its congressional sponsors. Either name works on the exam.
No. It still capped total immigration numbers; what changed was HOW slots were distributed. Instead of quotas favoring Western Europeans by ancestry, the law prioritized family members of U.S. residents and skilled workers, which shifted immigration toward Latin America and Asia.
They're opposites. The 1924 act created the national origins quota system to restrict immigration and favor Northern and Western Europeans, while the 1965 act abolished those quotas and opened immigration from Asia, Latin America, and Africa.
Because the exam cares about its effects, and those showed up after 1980. Topic 9.5 (learning objective APUSH 9.5.A) covers the post-1980 surge in migration from Latin America and Asia, and Hart-Celler is the cause behind that surge.