Immigration to the United States Study Guide

📖 Core Concepts Foreign‑born population – People born outside the U.S. who reside in the country (≈ 13 % of the total U.S. population in 2025). First‑generation immigrant – An individual who was born abroad and migrated to the U.S. (4 × increase from 1970 to 2007). Naturalization – The process by which a foreign‑born resident becomes a U.S. citizen (45 % of foreign‑born in 2017). National Origins Formula (1921‑1965) – Quota system that limited immigration to percentages of each nation’s 1910‑1920 foreign‑born population, favoring Northwestern Europe. Affiliation‑based approach (late‑20th c.) – Immigration benefits (e.g., green cards, benefits) depend on length of residence, employment history, and family ties. Healthy Immigrant Effect – Immigrants arrive healthier than native‑born Americans, though health advantage erodes over time. Economic productivity boost – Immigrants raise total factor productivity; each 1 % rise in immigrant share ≈ 0.5 % increase in productivity (Peri 2010). 📌 Must Remember Population size (2025): 53.3 M foreign‑born (15.8 % of U.S. pop). Immigrants + U.S.–born children (2024): > 93 M (28 % of pop). Legal admissions 2016: 1.18 M immigrants. 2017 status breakdown: 45 % naturalized, 27 % LPR, 6 % temporary, 23 % unauthorized. Key statutes: Naturalization Act 1790 (white‑only); expanded 1860s (Black) & 1950s (Asian). Chinese Exclusion Act 1882; repealed 1943. Immigration Acts 1917, 1921, 1924 (quota & barred‑zone). Immigration & Nationality Act 1965 – ends national‑origin quotas. Immigration Reform & Control Act 1986 – amnesty for 3 M undocumented, employer verification. Immigration Act 1990 – creates Diversity Visa, raises caps 40 %. Economic impact: Overall positive on GDP and productivity; low‑skill immigration may depress low‑skill native wages, high‑skill immigration benefits all. Crime: Immigrants consistently have lower per‑capita crime rates than native‑born. Refugee caps: Trump era low of 15 000 (FY 2021); Biden target 125 000 (2024). Climate‑driven migration: Dry Corridor (Guatemala, El Salvador, Honduras) supplies ½ of Central‑American migrants. 🔄 Key Processes Legal Immigration Admission (post‑1965): Step 1: Determine eligibility (family‑based, employment, diversity, refugee). Step 2: File petition (I‑130, I‑140, etc.). Step 3: Visa issuance subject to per‑country caps. Step 4: Arrival → obtain green card (adjust status or consular processing). Naturalization: Residency: ≥ 5 years (3 years if married to a citizen). Requirements: Good moral character, English & civics test, continuous residence. Oath of allegiance → citizenship. Refugee/Asylum Process: Refugee (outside U.S.): Apply to U.S. Refugee Admissions Program → President sets annual ceiling → vetting → resettlement. Asylum seeker (inside U.S.): File Form I‑589 within 1 yr of arrival → interview/immigration court → grant or denial. Removal Proceedings: Initiated by DHS → immigration judge → possible relief (cancellation of removal, asylum, DACA). 🔍 Key Comparisons Quota‑based (pre‑1965) vs. Affiliation‑based (post‑1965) Quota‑based: Fixed numbers per nation, favored Europe, limited overall flow. Affiliation‑based: Emphasizes family ties, employment, length of stay; no national‑origin caps. Legal vs. Unauthorized Immigrants (2017) Legal: 77 % (naturalized + LPR + temporary). Unauthorized: 23 % (still a sizable share). Low‑skill vs. High‑skill Immigration Low‑skill: May reduce low‑skill native wages, fills “hard‑to‑fill” jobs. High‑skill: Boosts productivity, raises overall wages, minimal displacement. Refugee admissions (Trump vs. Biden) Trump: 15 000 (FY 2021) – historic low. Biden: 125 000 (2024) – aims to restore historic leadership. ⚠️ Common Misunderstandings “Immigration drives crime.” → Data show immigrants commit fewer crimes per capita. All refugees are “illegal.” → Refugees are admitted legally before entry; asylum seekers apply after entry. Per‑country caps stop immigration from populous nations. → Caps limit visas per year but do not block migration entirely; demand still high. Undocumented workers only work in agriculture. → They also work in construction, services, and other sectors; 3 % of agricultural workforce is undocumented, not the whole. 🧠 Mental Models / Intuition “Push‑Pull” Model: Push factors (poverty, violence, climate) + Pull factors (jobs, family, safety) → net migration decision. “Economic Complementarity” – Think of immigrants as specialized tools: they fill gaps where native labor is scarce, raising overall productivity. “Quota as a Funnel”: Early 20th‑century quotas acted like a narrow funnel that let only certain nationalities through; post‑1965 reforms opened the funnel wide, letting in diverse origins. 🚩 Exceptions & Edge Cases Temporary lawful residents (6 % of foreign‑born, 2017): Include student visas, H‑2A workers – not counted as LPRs but have work authorization. Sanctuary cities: Do not statistically increase crime rates, contrary to some political claims. Climate migrants: Not a separate legal category yet; they enter through existing immigration channels (often as economic migrants). 📍 When to Use Which Family‑based visa → When a U.S. citizen/permanent resident has an immediate relative abroad (spouse, child, parent). Employment‑based visa → When employer can demonstrate a shortage of U.S. workers with required skills. Diversity Visa → When applicant is from a low‑admission country and meets education/work experience threshold. Refugee status → When the applicant faces persecution abroad before travel; apply through UNHCR or U.S. Refugee Admissions Program. Asylum → When persecution becomes apparent after arrival; file I‑589 within 1 yr. DACA → For individuals who arrived as children before June 15, 2007 and meet education/work criteria. 👀 Patterns to Recognize Age‑distribution spike (15‑34) → Immigrants heavily represented in prime working ages → explains labor‑market impact. Geographic clustering → Immigrants settle where co‑ethnic communities already exist → look for “ethnic enclaves” in exam questions about settlement patterns. Economic cycles & immigration flows → Admissions dip sharply during Great Depression; post‑2008 recession shows immigrant‑driven job gains. Policy → Demographic shift → 1965 Act → drop from 60 % European to 15 % European immigrant share by 2000. 🗂️ Exam Traps “Immigrants increase crime” – distractor; studies show lower crime rates. Confusing “refugee” with “asylum seeker.” – refugees apply abroad; asylum seekers apply after entry. Assuming per‑country caps eliminate immigration from large nations. – caps limit numbers per year, not total flow; large nations still send many immigrants. Believing the 1924 National Origins Formula is still in effect. – abolished by 1965 Act. Mixing up the “Zero‑tolerance” policy (family separations) with the 1986 amnesty. – distinct eras, different goals. --- Study tip: Focus on the policy timeline (early restrictions → quota era → 1965 reform → 1990 diversification → 1986 amnesty) and economic outcomes (productivity boost, low‑skill wage effects, fiscal contributions). Recognizing these patterns will let you quickly eliminate distractors and choose the right answer under exam pressure.