---
title: "Immigration and Nationality Act of 1965 | California History"
description: "Immigration and Nationality Act of 1965 ended national origins quotas and reshaped California’s immigrant population through family reunification and skills."
canonical: "https://fiveable.me/hs-california-history/key-terms/immigration-and-nationality-act-of-1965"
type: "key-term"
subject: "California History"
unit: "Unit 17"
---

# Immigration and Nationality Act of 1965 | California History

## Definition

The Immigration and Nationality Act of 1965, or Hart-Celler Act, ended national origins quotas and changed U.S. immigration toward family reunification and skilled migration. In California History, it helps explain why the state’s population became more diverse after the 1960s.

## What It Is

The Immigration and Nationality Act of 1965 is the federal law that replaced the older national origins quota system with a new preference system. In California History, it marks a major turning point because it changed who could enter the United States and, over time, helped reshape California’s population, labor force, and communities.

Before 1965, immigration law favored some countries over others through quotas set in the 1920s. Those rules limited immigration from many parts of Asia, Africa, and southern and eastern Europe. The 1965 act removed that system and said immigration should be organized more around family connections and job skills, not ancestry.

That shift mattered a lot in California because the state was already tied to migration, agriculture, defense jobs, ports, and expanding urban centers. Once the law opened new pathways, more immigrants from Asia and Latin America were able to come, and family reunification made the change bigger over time. One person coming legally could eventually make it easier for relatives to follow, so the effect was not just immediate, it kept building.

This is why the act shows up in California History as more than a federal policy change. It helps explain demographic change in cities and suburbs, the growth of multilingual communities, and the changing politics around schools, labor, housing, and public services. If you are tracing California’s postwar history, this law sits right in the middle of the story.

It also connects to the Civil Rights era. The law did not end every form of discrimination in immigration, but it did reject the idea that nationality alone should determine who gets to enter. That made it part of a broader movement away from openly discriminatory policy and toward a more equality-based legal framework.

## Why It Matters

This term matters because California History is full of population change, and the 1965 act is one of the biggest reasons the state changed so quickly after midcentury. If you are looking at why California became more diverse in the late 20th century, this law is one of the first causes to check.

It also helps you connect policy to lived experience. A law on immigration is not just a Washington, D.C. story. In California, it affected neighborhood growth, school enrollment, language access, workplace demographics, and the political debates that followed. That makes it useful for essays about migration, civil rights, and the state’s changing identity.

The act is also a good example of how laws can have effects that go beyond their original wording. The main goal was not to predict every future result in California, but the combination of family reunification and new preference categories changed migration patterns for decades. When you see later debates over immigration in California, this law is part of the background story.

## Connections

### National Origins Quota

This is the system the 1965 act replaced. The old quota rules limited immigration by country of origin, which favored some European nations and restricted many others. When you compare the two, you can see the shift from ancestry-based limits to a system that focused more on family ties and skills.

### Family Reunification

Family reunification became one of the main pathways in the new immigration system. Instead of treating immigration as a fixed annual count by nationality, the law made it easier for relatives of U.S. residents and citizens to immigrate. In California, that created long-term chain migration that shaped neighborhoods and school communities.

### [Immigration Act of 1917](/hs-california-history/key-terms/immigration-act-of-1917)

The 1917 law is part of the older restrictive era that the 1965 act moved away from. It shows how immigration policy had already been used to exclude or limit certain groups before the big changes of the civil rights era. Putting the two together helps you track the long shift in federal immigration policy.

### [Immigration Reform and Control Act](/hs-california-history/key-terms/immigration-reform-and-control-act)

This later law is useful for comparison because it shows that immigration debates did not end in 1965. While the 1965 act expanded legal pathways, later reforms focused more on enforcement and work authorization. In California History, the pair helps you see how immigration policy moved from opening doors to managing new tensions.

## On the AP Exam

A quiz question might ask you to identify why California’s immigrant population became more diverse after the 1960s, and this is one of the best answers. In a short response or essay, you can use it to explain cause and effect, federal policy changed the legal rules, and California saw the demographic results.

If you get a timeline item, place it in the Civil Rights era and connect it to the decline of earlier discriminatory immigration rules. For a document-based or source-based question, look for references to family sponsorship, new arrivals from Asia or Latin America, or debates about who should be allowed to enter the country. The best move is to connect the law to a broader pattern in California, not just name the statute.

## Immigration and Nationality Act of 1965 vs National Origins Quota

These are often mixed up because they are opposites in practice. The national origins quota system restricted immigration based on where someone came from, while the Immigration and Nationality Act of 1965 ended that approach and created a new preference system. If a question asks about exclusion by nationality, think quota system. If it asks about the policy that removed those limits, think 1965.

## Key Takeaways

- The Immigration and Nationality Act of 1965 ended the national origins quota system and changed U.S. immigration law.
- In California History, the law matters because it helped increase immigration from Asia, Africa, and Latin America.
- Family reunification became a major pathway, so the effects of the law grew over time as more relatives followed earlier immigrants.
- The act helped reshape California’s demographics, schools, workplaces, and local politics after the 1960s.
- It belongs in the Civil Rights era because it moved immigration policy away from openly discriminatory nationality-based rules.

## FAQs

### What is the Immigration and Nationality Act of 1965 in California History?

It is the federal law that ended the old national origins quota system and changed immigration rules in ways that affected California’s population. The act made family reunification and job skills more important than a person’s country of origin. In California History, it is a major reason the state became more diverse after the 1960s.

### How did the Immigration and Nationality Act of 1965 change California?

It helped increase immigration from Asia, Latin America, and other regions, which changed California’s demographics over time. Because family reunification was a major part of the law, the effects spread through communities and generations. That is why the act shows up in lessons about population growth, urban change, and state identity.

### Is the Immigration and Nationality Act of 1965 the same as the national origins quota?

No, they are opposites. The national origins quota system limited immigration based on country of origin, while the 1965 act abolished that system. If a question asks about the policy that opened new immigration pathways, the answer is the 1965 act.

### Why does family reunification matter in the Immigration and Nationality Act of 1965?

Family reunification made it possible for immigrants already in the United States to sponsor relatives. That created chain migration, where one arrival could lead to more family members coming later. In California, this helped communities grow steadily rather than changing all at once.

## Related Study Guides

- [17.3 Immigration policies and debates](/hs-california-history/unit-17/immigration-policies-debates/study-guide/EqHWYjnIOxZpOGbE)

## About This Document

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