What Is 1965 Immigration Act

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Last updated: April 15, 2026

Quick Answer: The Immigration and Nationality Act of 1965, also known as the Hart-Celler Act, abolished the national origins quota system that had been in place since the 1920s and established a new system prioritizing family reunification and skilled immigrants. Signed into law by President Lyndon B. Johnson on October 3, 1965, at Liberty Island, New York, it fundamentally reshaped U.S. immigration patterns over the following decades.

Key Facts

Signed into law on October 3, 1965 by President Lyndon B. Johnson
Abolished the national origins quota system established in the 1920s
Introduced a preference system prioritizing family reunification and employment skills
Set an annual cap of 170,000 visas for Eastern Hemisphere immigrants
Led to a significant increase in immigration from Asia, Africa, and Latin America

Overview

The Immigration and Nationality Act of 1965, commonly known as the Hart-Celler Act, marked a turning point in U.S. immigration policy by dismantling a decades-old system based on national origin. Prior to 1965, immigration quotas heavily favored Northern and Western Europeans, severely limiting entries from Asia, Africa, and Southern and Eastern Europe.

Enacted during the civil rights era, the law reflected a broader national push toward equality and non-discrimination. Its passage signaled a shift from racially biased policies to a more inclusive framework grounded in family ties and professional skills.

Replaced the 1924 National Origins Formula with a new preference system that eliminated quotas based on race or nationality, opening doors to previously excluded groups.
Established a 20,000-visa cap per country in the Eastern Hemisphere, ensuring no single nation dominated immigration flows while promoting diversity.
Allocated 74% of visas to family-sponsored preferences, prioritizing spouses, children, and siblings of U.S. citizens and lawful residents.
Reserved 20% of visas for employment-based immigration, attracting professionals, scientists, and individuals with exceptional abilities.
Mandated a 170,000 annual limit for immigrants from the Eastern Hemisphere, with no more than 20,000 per country, to manage volume and fairness.

How It Works

The 1965 Act restructured legal immigration into a tiered preference system emphasizing family and occupational qualifications over national origin.

Family Reunification: Immediate relatives of U.S. citizens—spouses, minor children, and parents—are exempt from numerical limits, ensuring family unity remains central.
Employment-Based Preferences: Five preference categories prioritize workers with job offers, advanced degrees, or exceptional abilities, enhancing economic competitiveness.
Per-Country Limits: The 20,000-visa cap per Eastern Hemisphere country prevents dominance by any single nation and promotes geographic diversity.
Refugee Provisions: Though not a primary focus, the Act allowed for refugee admissions outside the main quota, later expanded by the 1980 Refugee Act.
Western Hemisphere Cap: Initially, no numerical limit existed for the Americas, but Congress imposed a 120,000 annual ceiling in 1976 due to rising demand.
Backlogs and Wait Times: High demand from certain countries, especially in Asia, led to multi-year waits, particularly in family-sponsored categories.

Comparison at a Glance

Below is a comparison of pre-1965 and post-1965 U.S. immigration systems:

Metric	Pre-1965 System	Post-1965 System
Primary Basis	National origin and ethnicity	Family ties and employment skills
Quota Example	Germany: ~25,000/year; Italy: ~4,000/year	20,000/year per country cap
Asian Immigration	Severely restricted; often under 100/year	Significantly increased; over 300,000 by 1975
Annual Ceiling (Eastern Hemisphere)	~150,000, unevenly distributed	170,000, evenly distributed
Top Source Regions	Western and Northern Europe	Asia, Latin America, Caribbean

This shift dismantled discriminatory structures and diversified the U.S. population. By 2000, over 80% of immigrants came from Asia, Africa, and Latin America—regions previously marginalized under the old system.

Why It Matters

The 1965 Immigration Act reshaped American society, economy, and culture by enabling broader global participation in the U.S. dream. Its long-term effects are visible in demographic shifts, labor markets, and multicultural urban landscapes.

Transformed U.S. demographics: By 2015, the foreign-born population rose from 5% in 1965 to over 13%, driven largely by non-European immigration.
Boosted economic growth: Skilled immigrants filled critical roles in technology, medicine, and engineering, contributing to innovation.
Strengthened diaspora communities: Chain migration allowed entire communities to resettle, creating vibrant ethnic enclaves in major cities.
Influenced civil rights discourse: The Act aligned immigration policy with the era’s ideals of racial and ethnic equality.
Spurred future reforms: It laid the foundation for the 1986 Immigration Reform and Control Act and the Diversity Visa program.
Altered global migration patterns: Countries like India, China, and the Philippines reoriented emigration strategies toward U.S. family and employment channels.

Today, the 1965 Act is widely regarded as one of the most consequential pieces of 20th-century legislation, setting the stage for modern American pluralism.