The McCarran-Walter Act, formally known as the Immigration and Nationality Act of 1952 (Public Law 82-414), was a comprehensive overhaul of U.S. immigration and naturalization laws. Sponsored by Senator Pat McCarran (D-Nevada) and Representative Francis Walter (D-Pennsylvania), both staunch anti-communists, the act codified existing immigration statutes into a single framework while reflecting the intense anti-communist sentiments of the early Cold War era. It passed Congress in June 1952, was vetoed by President Harry S. Truman (who criticized its discriminatory quotas and security provisions), and became law after Congress overrode the veto on June 27, 1952, taking effect on December 24, 1952.The act represented a mix of progressive and restrictive elements: it ended long-standing racial bars on immigration and citizenship (particularly for Asians), but retained and refined a discriminatory national origins quota system favoring Northern and Western Europeans, while introducing stringent ideological exclusions to combat perceived communist threats.Historical ContextEnacted amid the Second Red Scare and McCarthyism, the act responded to fears of communist infiltration following World War II and the rise of the Soviet Union. It built on earlier laws like the Immigration Act of 1924 (which established national origins quotas) and the Internal Security Act of 1950 (McCarran’s earlier anti-subversion measure). Post-WWII pressures included refugee crises, decolonization in Asia and Africa, and alliances requiring symbolic gestures toward non-European nations. Critics, including Truman, argued it undermined U.S. foreign policy by alienating potential anti-communist allies in Asia through continued discrimination.Key Provisions
- National Origins Quota System: Retained the core of the 1924 act but adjusted it slightly. Annual immigration was capped at about 155,000-154,000 visas, allocated at one-sixth of 1% of each nationality’s U.S. population per the 1920 census. This heavily favored Northern and Western Europeans (e.g., Britain, Ireland, Germany received ~two-thirds of quotas). A minimum quota of 100 visas per country was introduced, and an “Asia-Pacific Triangle” provision capped Asian immigration racially (anyone with Asian ancestry counted against Asian quotas, regardless of birthplace).
- End of Racial Bars on Citizenship: Abolished the “aliens ineligible to citizenship” category, which had barred Asians since the 1790 Naturalization Act. This allowed Japanese, Koreans, and others to naturalize for the first time, aligning with wartime repeals of Chinese, Indian, and Filipino exclusions. It established color-blind citizenship in principle.
- Preference System: Introduced priorities within quotas: skilled workers with needed abilities (up to 50% of visas), family reunification (e.g., spouses, children of citizens non-quota), and other relatives.
- Ideological and Security Exclusions: Expanded grounds for exclusion/deportation to include current or past membership in communist, totalitarian, or subversive organizations; advocacy of communism; or activities deemed harmful to U.S. security. It empowered deportation of legal residents (even naturalized citizens in some cases) for ideological reasons and strengthened enforcement powers.
- Other Changes: No quotas for Western Hemisphere immigrants; non-quota status for husbands of U.S. citizens (matching wives); labor certification to protect American jobs; provisions for refugee admission under parole authority.
Impact and Legacy
- Positive Aspects: Symbolically advanced racial equality by enabling Asian naturalization and modest immigration. Between 1952 and 1965, Asian immigration increased (though mostly non-quota), and the act facilitated family-based entries.
- Criticisms and Limitations: Quotas remained racially biased, with low utilization from Europe and severe restrictions on Asia/Africa. Ideological provisions were used to exclude/deport suspected subversives, raising civil liberties concerns. Actual immigration exceeded projections due to non-quota entries and refugee measures, totaling ~3.5 million by 1965 (vs. expected ~2 million).
- Amendments and Repeal: The quota system was abolished by the Immigration and Nationality Act of 1965 (Hart-Celler Act), shifting to family reunification and skills-based preferences with hemispheric caps. Many ideological exclusions were relaxed or repealed in the 1970s-1990s (e.g., via the Immigration Act of 1990). The 1952 act’s framework remains the basis of U.S. immigration law (Title 8 U.S. Code), heavily amended.
The McCarran-Walter Act exemplified Cold War priorities: liberalizing racial barriers for diplomatic gains while tightening security against ideological threats. It bridged restrictive 1920s policies and the more equitable (though still debated) post-1965 era.

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