Immigration and Nationality Act

The Immigration and Nationality Act (INA), enacted on June 27 1952 and signed by President Dwight D. Eisenhower, is the comprehensive federal statute that governs admission, exclusion, deportation, and naturalization in the United States. By consolidating more than a dozen earlier immigration measures into a single code, the INA created the legal architecture that still determines who may enter, stay, work, and become a citizen, while also establishing the grounds on which the government may deny or revoke those privileges. Its most consequential legacy is the 1965 amendment—commonly called the Hart‑Celler Act—that eliminated the racially based national‑origin quotas that had limited immigration since the 1924 Johnson‑Reed law. ## Origins and Legislative Evolution The INA emerged from a post‑World‑War II consensus that the patchwork of statutes dating back to the Immigration Act of 1882 was inefficient and discriminatory. It codified the Immigration and Naturalization Service (INS) into a single agency and introduced a preference system that prioritized family reunification, skilled labor, and refugees. Earlier statutes such as the 1924 Immigration Act imposed strict caps based on each nation’s share of the 1890 U.S. population; the 1952 law retained a quota framework but expanded it to 54 nationalities and added a “preference” hierarchy (Sections 203‑204). The act also created the legal definition of “alien” (Section 101) and set the groundwork for modern removal proceedings (Section 274). ## Core Mechanisms and Administrative Structure Under the INA, the Department of State issues immigrant visas abroad, while the Department of Homeland Security (DHS) administers status once the alien is on U.S. soil. USCIS (U.S. Citizenship and Immigration Services) processes petitions for family‑based (F1‑F4) and employment‑based (EB‑1 to EB‑5) visas, adjudicates adjustment‑of‑status applications (Section 245), and conducts naturalization (Section 316). ICE (Immigration and Customs Enforcement) enforces removal orders, and CBP (Customs and Border Protection) handles entry inspection at ports of entry. The act also authorizes “Section 287(g) agreements,” allowing state and local law‑enforcement to assist in immigration enforcement, a provision that has generated extensive debate since its 1996 inception. ## Key Provisions of the INA - Section 101 defines terms such as “lawful permanent resident” and “non‑immigrant.” - Section 203 outlines the five family‑preference categories (spouses, minor children, unmarried adult children, married children, and siblings) and the three employment‑based categories, each with annual caps of 65 % of the worldwide limit. - Section 212 lists grounds of inadmissibility, including health‑related issues, criminal convictions, and security concerns; it also establishes the “visa‑waiver” for certain nationals. - Section 245 permits adjustment of status for eligible non‑immigrants already present in the United States, a pathway that accounted for roughly 1.2 million approvals in FY 2023. - Section 274 governs removal (deportation) procedures, providing for voluntary departure, reinstatement of removal orders, and judicial review. - Section 287(g) enables cooperative immigration enforcement with state and local police, a tool used in over 200 jurisdictions as of 2022. ## 1965 Amendments and the End of National‑Origin Quotas The Hart‑Celler amendments, signed by President Lyndon B. Johnson on October 3 1965, abolished the 1924 national‑origin caps and replaced them with a uniform per‑country ceiling of 7 % of the total annual immigration floor (approximately 140,000 visas per country today). The reforms introduced a two‑tiered system: 55 % of visas for family reunification and 45 % for skilled workers and refugees. As a result, annual lawful permanent resident admissions rose from roughly 2 million per decade in the 1950s to over 9.6 million between 1990 and 2000, dramatically reshaping the demographic composition of the United States. ## Current Implementation and Ongoing Debates In the 2020s, the INA remains the focal point of immigration policy disputes. The Biden administration’s 2021 memorandum restored DACA (Deferred Action for Childhood Arrivals) under the “provisional unlawful presence” exception of Section 101(a)(42), while also proposing a 2024 rule to increase the per‑country cap to 15 %—a change still pending judicial review. Meanwhile, the H‑1B program, a subset of the employment‑based categories, has faced scrutiny for fraud and exploitation, prompting the Department of Labor to tighten prevailing‑wage attestations in 2023. Legislative proposals such as the “Fairness for High‑Skilled Immigrants Act” seek to eliminate the per‑country ceiling altogether, arguing that the cap disadvantages applicants from populous nations like India and China. Court