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United States Citizenship Guide

20 citizenship pathways — everything you need to know about eligibility, documents, timelines, and costs.

4 min readLast updated: April 2026

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Adoption

2 pathways in this category

CCA 2000 automatic derivation — LPR child in U.S. (INA 320)

Automatic derivation: USC parent + child under 18 + LPR residing in US in USC-parent legal/physical custody. No application required (N-600 evidence only). Effective 2001-02-27; pre-CCA aged-out cohort excluded. US-NAT-03 merged here.

T295% data confidence

CCA 2000 foreign-adopted / foreign-residing derivation (INA 322)

Application-based path for children outside US with USC parent. USC parent 5-year physical-presence (2 after age 14) OR USC grandparent substitution. Form N-600K. Covers IR-4 pre-adoption + foreign-resident children.

T295% data confidence

Birth

3 pathways in this category

14th Amendment jus soli (signature route)

Signature route — full 3-tier TRC mandatory. EO 14160 neutrality discipline applies: document state of law as is (EO 14160 currently enjoined; SCOTUS Trump v. Barbara 25-365 argued 2026-04-01, decision pending).

T193% data confidence

Statutory territorial jus soli (PR, Guam, USVI, CNMI)

Statutory jus soli for the four incorporated-statutory territories. PR >=1899-04-11; Guam >=1950-08-01; USVI >=1927-02-25; CNMI >=1986-11-04 + 1978-1986 Sabangan cohort.

T197% data confidence

American Samoa non-citizen national

Only U.S. population holding non-citizen-national status. Insular Cases framework + 8 U.S.C. 1408(1). Fitisemanu 10th Cir. 2021 + Tuaua D.C. Cir. 2015; cert denied in both.

T196% data confidence

Descent

4 pathways in this category

Acquisition at birth abroad — one USC parent (INA 301(g))

Acquisition at birth for child born abroad to one USC + one alien parent. Three cohort splits: pre-1986-11-14 (10-year/5-after-14); 1986-11-14 through 2017-06-11 (5-year/2-after-14); post-2017-06-12 Morales-Santana equalized.

T297% data confidence

Out-of-wedlock acquisition at birth abroad (INA 309)

Out-of-wedlock transmission. Pre-Morales-Santana 2017-06-12 differential equalized prospectively to LONGER 5-year test for post-decision births; pre-decision maternal 1-year rule preserved.

T295% data confidence

Acquisition at birth — two USC parents (INA 301(c))

Both parents USC. Reduced physical-presence vs INA 301(g): at least one parent with prior US or outlying-possession residence. Distinct from INA 301(g) + INA 309.

T296% data confidence

Historical / pre-INA descent cohort (pre-1952 framework)

Retrospective N-600 / CRBA adjudication for pre-1952 framework. Pre-1941-01-13 patchwork; 1941-01-13 through 1952-12-23 Nationality Act 1940; Cable Act 1922 pre-1940 married-women cohort. 8 FAM 301.6.

T395% data confidence

Historical

1 pathway in this category

Indian Citizenship Act 1924 (Snyder Act) — Native American

Collective statutory grant to ~125,000 non-citizen Native Americans born within US territorial limits. Preserves tribal citizenship. Separate from Jay Treaty 1794 Article III. Dual tribal-US citizenship.

T197% data confidence

IND

1 pathway in this category

Jay Treaty Native American Border Framework

8 USC 1359 right for Canadian-born American Indians with ≥50% blood quantum to cross US-Canada border and reside in US. LPR-equivalent; counts toward INA 316 naturalization.

97% data confidence

Naturalization

3 pathways in this category

General naturalization (INA 316 — 5-year LPR, signature)

Signature route. INA 316: 5-year LPR + 30-month physical presence + 3-month state + GMC + Constitution attachment + English + civics + oath. Dual-track 2025 Civics Test (pre/post 2025-10-20). INA 312(b) exemptions. 2024 Fee Rule N-400 $760/$710/$380. DOJ Shumate Memo 2025-06-11 denaturalization context.

T295% data confidence

Spouse-of-USC naturalization (INA 319(a) 3-year path)

3-year accelerated path. 3-year LPR + 3-year marriage + USC spouse USC throughout + marital union + 18-month physical presence + 3-month state + GMC + English/civics/oath. US-MAR-01 merged.

T297% data confidence

Military naturalization umbrella (INA 328/329/329A — signature)

Signature route + umbrella. Three sub-variants: INA 328 peacetime (1-year honorable + waived residency); INA 329 wartime (any honorable during EO 13269 GWOT 2001-09-11 onward + no residency); INA 329A posthumous (N-644). Filing N-400 Mil + N-426. Fee $0. US-MIL-01/02/03 consolidated. NDAA FY2004 Pub. L. 108-136 reduced 328 threshold.

T195% data confidence

Restoration

2 pathways in this category

Voluntary loss restoration (Afroyim/INA 349)

Restoration framework. INA 349 seven-act enumeration with voluntary-intent requirement (Afroyim). DOS presumption of non-relinquishment per 7 FAM 1210/1220. Vance v. Terrazas preponderance burden.

T297% data confidence

Denaturalization reversal (Maslenjak/INA 340)

Denaturalization reversal under Maslenjak materiality 2017. Civil INA 340 + criminal 18 U.S.C. 1425 parallel tracks. DOJ Shumate Memo 2025-06-11 priority elevation.

T396% data confidence

Special

4 pathways in this category

Refugee / asylee LPR to naturalization

Refugee/asylee adjusted LPR via INA 209 then naturalization via INA 316. Retroactive 1-year LPR date for refugees (INA 209(a)(2)); 1-year-before-approval for asylees (209(b)).

T295% data confidence

Cuban Adjustment Act 1-year LPR path

1-year LPR path for Cuban-origin via CAA 1966 (Pub. L. 89-732). 2017-01-12 Wet-Foot/Dry-Foot repeal was administrative, did not repeal CAA statutory framework.

T295% data confidence

NACARA 1997 Central American pathway

Section 202 (Nicaraguans/Cubans direct LPR) vs Section 203 (Salvadorans/Guatemalans/former-Soviet-bloc pre-IIRIRA suspension). ABC v. Thornburgh 1991 settlement underlying.

T295% data confidence

Registry INA 249 (pre-1972 continuous residence)

LPR adjustment for aliens who entered the US before January 1, 1972 and resided continuously. Requires proof of entry, continuous residence, and good moral character.

95% data confidence

Common questions about United States citizenship

Short answers to the questions visitors most often ask. For a case-specific verdict, book a one-on-one assessment above.

United States citizenship by descent eligibility depends on your specific ancestor's birth date, place, and whether the citizenship line was broken (typically by naturalization elsewhere before your parent's birth). Each generation has its own rules under the laws in force at the time. Take our free 2-minute eligibility quiz for a preliminary assessment, or book a one-on-one verdict with a citizenship expert for a definitive answer.

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  • Reviewed by a former EU-citizenship-firm consultant — primary law, not generic advice.
  • Written verdict delivered within 24 hours.
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