Naturalization & U.S. Citizenship

Becoming a U.S. citizen through naturalization — governed by the Immigration and Nationality Act and codified at 8 U.S.C. §§ 1401–1430 — is the legal process by which lawful permanent residents (green card holders) become full citizens, gaining the right to vote, hold federal office, obtain a U.S. passport, and sponsor immediate relatives for green cards without numerical limits. The standard path requires 5 years of lawful permanent residence (3 years if married to a U.S. citizen throughout), with at least 30 months of physical presence in the U.S. during that period, continuous residence (no single absence exceeding 6 months), demonstrated English proficiency, good moral character, and passing a civics test of 100 questions about U.S. history and government (10 randomly asked, 6 correct needed to pass). Approximately 750,000–900,000 people naturalize annually, making the U.S. one of the world's largest naturalizing nations. U.S. citizenship is also acquired at birth through birthright citizenship — either by being born on U.S. soil (jus soli, grounded in the 14th Amendment) or to a U.S. citizen parent abroad under statutory conditions (jus sanguinis, 8 U.S.C. § 1401). The Trump administration's January 2025 executive order attempting to restrict birthright citizenship for children of undocumented parents was immediately blocked by federal courts as inconsistent with the 14th Amendment — litigation continues. USCIS administers the naturalization process through 93 field offices.

Current Law (2026)

Legal Authority

• 8 U.S.C. § 1421 — Naturalization authority (only the Attorney General/USCIS can naturalize; oath taken before USCIS or eligible court)
• 8 U.S.C. § 1422 — Eligibility for naturalization (no discrimination by race, sex, or marital status)
• 8 U.S.C. § 1423 — English language, history, and government requirements (reading, writing, speaking English; civics knowledge)
• 8 U.S.C. § 1424 — Bars to naturalization (persons opposed to organized government, totalitarianism advocates)
• 8 U.S.C. § 1427 — Core requirements (5-year residency, continuous presence, good moral character, attachment to Constitution)
• 8 U.S.C. § 1429 — Prerequisite — must have been lawfully admitted for permanent residence
• 8 U.S.C. § 1430 — Married persons (3-year path for spouses of U.S. citizens)
• 8 U.S.C. § 1401 — Citizenship at birth (born in the U.S. or born abroad to citizen parents under specific conditions)
• 8 U.S.C. § 1409 — Children born out of wedlock (citizenship transmission rules for unmarried parents)

Implementing Regulations (CFR)

• 8 CFR Part 312 — Literacy and civics requirements:

  • 8 CFR 312.1 — Literacy requirements (reading, writing, speaking English at a basic level)
  • 8 CFR 312.2 — Knowledge of history and government of the United States (civics exam content and administration)
  • 8 CFR 312.4 — Selection of interpreter (for applicants exempt from English requirement)
  • 8 CFR 312.5 — Failure to meet educational and literacy requirements (re-examination procedures)

• 8 CFR Part 316 — General requirements for naturalization:

  • 8 CFR 316.2 — Eligibility (5-year residency, physical presence, continuous residence, age 18+)
  • 8 CFR 316.10 — Good moral character (bars: criminal convictions, fraud, controlled substance violations, habitual drunkenness, failure to support dependents, etc.)
  • 8 CFR 316.11 — Attachment to the Constitution; favorable disposition towards good order and happiness of the U.S.
  • 8 CFR 316.14 — Adjudication — examination, grant, denial

• 8 CFR Part 310 — Naturalization Authority: the foundational rules governing who has authority to naturalize U.S. citizens and how that authority operates. Key provisions:

  • § 310.1 — Since October 1, 1991, the Attorney General (now delegated to USCIS/DHS) holds sole administrative authority to naturalize persons as citizens under INA § 310; the pre-1991 system of judicial naturalization petitions was replaced by USCIS administrative adjudication for all new applications
  • § 310.2 — Early filing: USCIS may accept a naturalization application up to 3 months before the applicant would otherwise satisfy the continuous residence requirement in the district where the application is filed; at the time of examination, the applicant must actually satisfy the requirement — early filing does not accelerate the clock
  • § 310.3 — Oath of allegiance: applicants may elect to have the oath administered in a USCIS public ceremony or by any eligible court; courts that want to exercise exclusive jurisdiction for a 45-day period (which delays USCIS from administering the oath) must notify the district director in writing; if a court does not claim exclusive jurisdiction, USCIS may administer the oath after the 45-day window; the court option allows family courthouse ceremonies — a common choice
  • § 310.4 — Residual judicial authority: courts retain jurisdiction only over naturalization petitions filed before October 1, 1991; petitioners with pre-1991 pending petitions could elect to withdraw and convert to the administrative process before December 31, 1991; no court has new naturalization jurisdiction for post-1991 applications
  • § 310.5 — Judicial review: if USCIS fails to make a determination within 120 days after examination, the applicant may sue in U.S. District Court and ask the court to adjudicate the application or remand with instructions; after a denial following a hearing under INA § 336(a), the applicant may seek District Court review under INA § 310

• 8 CFR Part 313 — Membership in the Communist Party or any other Totalitarian Organization as a bar to naturalization. Key provisions:

  • § 313.1 — Definitions: "advocate" includes advising, recommending, furthering by overt act, or admitting a belief in a doctrine; it includes giving money or things of value in support; "advocating Communism" means advocating establishment of a totalitarian communist dictatorship in the U.S. through force, violence, or other means
  • § 313.2 — Bar to naturalization: no applicant may be naturalized if, within 10 years before filing (or after filing but before taking the oath), the applicant (a) is or was a member of or affiliated with the Communist Party or any other totalitarian organization; (b) advocates or advocates the right to advocate the violent overthrow of the U.S. government; or (c) is a member of or affiliated with any organization that advocates such overthrow; membership at any time is a statutory bar — the 10-year lookback period determines which past memberships trigger the bar
  • § 313.3 — Statutory exemptions: the applicant bears the burden of establishing any exemption applies; membership or affiliation is not a bar if it was (a) involuntary (including membership under age 16, membership that terminated before age 16); (b) for purposes of obtaining employment, food, or other essentials of living; (c) solely when the organization was not totalitarian in character; or (d) when the application for naturalization is approved, the applicant is not a member and has not been for at least 10 years; in practice, applicants claiming the involuntary or survival-necessity exemption must provide detailed documentation
  • § 313.4 — Procedure: applicants who claim membership or affiliation in any covered organization must attach a detailed written statement to their naturalization application describing: the organization, periods of membership or affiliation, any offices held, the circumstances of joining, and why membership terminated; USCIS adjudicators review these statements as part of the good moral character determination

• 8 CFR Part 320 — Child citizenship:

  • 8 CFR 320.1 — Eligibility for automatic citizenship (children born outside the U.S. with at least one U.S. citizen parent, admitted as lawful permanent residents, under 18)
  • 8 CFR 320.3 — Interview requirements (USCIS may waive or require interview for certificate of citizenship)

• 8 CFR Part 324 — Former citizen restoration:

  • 8 CFR 324.2 — Restoration of citizenship by birth (former citizens who lost citizenship through marriage or other specified acts)
  • 8 CFR 324.3 — Restoration of citizenship by naturalization (former naturalized citizens who lost citizenship and seek to regain it)

• 8 CFR Part 1337 — Oath of Allegiance: the procedural framework governing how and when the naturalization oath is administered — including which forum (USCIS or court), expedited access, name changes, failure to appear, and the precise moment citizenship vests. The oath ceremony is the final step in naturalization and the act that confers citizenship; these regulations govern its mechanics. Key provisions:

  • § 1337.1 — Form of oath: the standard naturalization oath requires the applicant to renounce and abjure all allegiance to foreign sovereigns, support and defend the Constitution, bear arms or perform noncombatant service when required by law, and perform civilian work of national importance when required; the oath may be modified to omit the weapons clause for applicants with sincere religious objection (conscientious objectors) — USCIS and the immigration court may allow modified oaths in qualifying cases; an applicant who is too physically incapacitated to speak the oath may take it in writing or through an attorney-in-fact
  • § 1337.2 — Oath administered by USCIS or an Immigration Judge: applicants who elect USCIS administration attend a public ceremony; USCIS conducts both large group ceremonies (at convention centers, stadiums) and smaller office ceremonies; the ceremony is open to the public; USCIS may also schedule ceremonies at hospitals, nursing homes, or other locations for applicants who cannot travel; Immigration Judges may administer the oath during removal proceedings in limited circumstances (e.g., for detained applicants who have been approved for naturalization)
  • § 1337.3 — Expedited oath administration: an applicant may receive an expedited oath ceremony — jumping ahead of the standard scheduling queue — by demonstrating sufficient cause; qualifying circumstances include: imminent deployment to military service, serious illness, or other emergency requiring immediate citizenship; courts may also grant expedited ceremonies; in practice, USCIS grants expedited ceremonies for active military members facing deployment orders on a near-automatic basis
  • § 1337.4 — Name change at naturalization: when a court grants a name change as part of the naturalization proceeding, the applicant subscribes the new name to the oath; the Certificate of Naturalization will reflect the new name; this is the most common mechanism for immigrants to legally change their name simultaneously with naturalizing, avoiding a separate court proceeding
  • § 1337.8 — Oath administered by the courts: applicants not subject to a court's exclusive jurisdiction may elect to take the oath before a court rather than USCIS; the applicant notifies USCIS of the election at filing or no later than at the naturalization interview; USCIS then transmits the case to the court's naturalization jurisdiction; federal district courts and certain state courts of record retain concurrent jurisdiction with USCIS to administer naturalization oaths
  • § 1337.9 — Effective date of naturalization: citizenship vests on the date the applicant takes the oath — not the date of the USCIS approval, not the date of the interview, and not the date the Certificate of Naturalization is issued; if the applicant takes the oath on September 15, they are a citizen as of September 15 regardless of when paperwork is processed; this date is recorded on the Certificate of Naturalization and determines voting eligibility, passport application timing, and other citizenship-dependent rights
  • § 1337.10 — Failure to appear for oath ceremony: an applicant who fails to appear without good cause for more than one scheduled oath ceremony is presumed to have abandoned the intent to naturalize; the presumption triggers a notice and the applicant must rebut it or the application is denied; a single failure to appear with good cause shown restarts the scheduling process without prejudice

  The oath's effective date in § 1337.9 has significant practical consequences: an applicant approved for naturalization but not yet sworn in is still a lawful permanent resident, not a citizen — they cannot vote, run for federal office, or obtain a U.S. passport. Delays between USCIS approval and oath scheduling (which can run 2–6 weeks for group ceremonies) mean applicants may miss registration deadlines for elections even after completing all naturalization requirements. Expedited oath ceremonies under § 1337.3 exist precisely to address some of these timing problems for urgent situations.

• 22 CFR Part 50 — Nationality Procedures (loss of nationality determinations, certificates of loss of nationality, expatriation acts, restoration of citizenship; 17 sections)

• 22 CFR Part 51 — Passports (passport application, issuance, refusal, revocation; passport fees; passport agencies and acceptance facilities; 46 sections)

• 8 CFR Part 319 — Special Classes of Persons Who May Be Naturalized: Spouses of United States Citizens: the regulatory framework for the reduced-residency naturalization path available to spouses of U.S. citizens under INA § 319(a). The standard path requires 5 years of lawful permanent residence; the spousal path requires only 3. Key provisions:

  • § 319.1 — Eligibility: the spouse must have been lawfully admitted for permanent residence, resided continuously in the U.S. for at least 3 years after admission, been living in marital union with the citizen spouse for those 3 years (the citizen must have been a citizen throughout), been physically present in the U.S. for at least 18 months during that period, and resided in the filing district for at least 3 months before filing (or before examination); the "living in marital union" requirement is not merely legal marriage — USCIS can deny if the couple lives apart, even if legally married; bona fide marriage is assessed through interviews, joint financial records, cohabitation evidence, and affidavits
  • § 319.2 — Spouses of U.S. citizens employed abroad: a separate pathway exists for spouses of U.S. citizens employed by the U.S. government, recognized international organizations, or U.S. companies abroad; these spouses may naturalize without the 3-year U.S. residence requirement if they are authorized to accompany the citizen employee abroad; they must be physically present in the U.S. at the time of naturalization and intend to reside in the U.S. upon the spouse's return
  • § 319.3 — Surviving spouses of military members: spouses of U.S. citizen military members who died during a period of honorable service may naturalize immediately upon the citizen's death without any minimum residency period, under an expedited humanitarian pathway
  • Application filing and adjudication follow the same USCIS Form N-400 process as standard naturalization, but the shorter clock makes timing critical: applicants may file up to 90 days early (3 months before reaching the 3-year anniversary of becoming a permanent resident, if married to a U.S. citizen for that period).

• 8 CFR Part 334 — Application for Naturalization: the USCIS procedural regulations governing how, when, and under what circumstances Form N-400 is filed — the mechanics of getting into the naturalization queue. Key provisions:

  • § 334.2 — Early filing: an N-400 application may be filed up to 90 days before the applicant would otherwise satisfy the required continuous residence period; importantly, early filing does not satisfy the residence requirement — at the time of the actual examination, the applicant must have completed the full period; the 90-day window exists to reduce administrative backlog by allowing USCIS to begin processing before the clock fully runs out
  • § 334.4 — Sick or disabled applicants: when an applicant may be unable to appear for the initial examination or any subsequent interview due to sickness or other disability, the district director must investigate to determine whether the applicant is so incapacitated as to prevent appearance at a USCIS field office; if so, the director must designate an alternative appearance location — typically the applicant's residence, a hospital, or a nursing facility — where the applicant can complete the required proceedings; this is a companion to the oath accommodation under § 1337.2
  • § 334.5 — Amendments: clerical corrections (errors in spelling, dates, biographical data) may be amended by either the applicant or USCIS at any time, including after the oath ceremony; amendments are limited to clerical errors — substantive amendments that affect the merits or jurisdiction are not permitted; if USCIS receives information indicating that naturalization should not have been granted (misrepresentation in the application, undisclosed criminal history, prior deportation order), it may reopen the case before admission to citizenship or initiate denaturalization proceedings after the oath has been taken
  • § 334.11 — Declaration of Intention: any lawful permanent resident over 18 may file a declaration of intent to become a U.S. citizen — the historical "First Papers" step; if approved, USCIS retains the application; if denied, the applicant is notified in writing with reasons; no appeal lies from the denial; the Declaration of Intention is no longer required as a prerequisite for naturalization under current law but is still available and may be useful for certain state or local purposes that recognize it as evidence of intent to become a citizen

  The 90-day early filing rule in § 334.2 has significant practical value for applicants approaching their eligibility date during an election year — filing 90 days early can allow USCIS to schedule and complete the interview and approve the application in time for the applicant to take the oath and register before an election, even if the 5-year residence anniversary falls close to registration deadlines. The sick/disabled accommodation in § 334.4 is underused — USCIS field offices have authority to conduct proceedings at alternative locations, but applicants often don't request this accommodation.

• 32 CFR Part 94 — Naturalization of Alien Members of the Armed Forces of the United States and of Alien Spouses and/or Alien Children of Military Personnel: the Department of Defense regulations implementing the military naturalization pathway under 8 U.S.C. § 1439 and 8 U.S.C. § 1440, which allow alien service members and their dependents to naturalize under accelerated procedures that waive standard civilian residency requirements. Key provisions:

  • § 94.4 — Military naturalization eligibility: an alien who has served honorably in the U.S. Armed Forces for 3 or more years is eligible for naturalization under 8 U.S.C. § 1439 regardless of how long they have resided in the United States — the standard 5-year continuous residence and physical presence requirements are waived; the applicant must be lawfully admitted for permanent residence, be of good moral character, and meet the English and civics requirements; the 3-year service clock counts only honorable service
  • § 94.4(b) — Military certification: the military department must certify the applicant's service record directly to USCIS — confirming length of service, honorable character of service, and any periods of overseas deployment; this certification is a mandatory predicate to USCIS adjudication; the certification is submitted on Department of Defense Form N-426, Request for Certification of Military or Naval Service
  • § 94.4(c) — Alien dependent naturalization: alien spouses and children of U.S. citizens who are U.S. military members may benefit from the military member's service for naturalization purposes; the certification process applies equally to dependent applicants who are naturalizing based on their relationship to an active-duty service member

  Part 94's most significant practical effect is the residence waiver: an alien who enlists, serves 3 years honorably, and is admitted as a lawful permanent resident can file Form N-400 immediately on meeting the 3-year service threshold — regardless of how recently they entered the United States. During designated periods of hostility (including post-9/11 combat deployments), the separate 8 U.S.C. § 1440 pathway allows immediate naturalization from the date of enlistment without any minimum service period and allows the oath to be administered overseas. USCIS military liaison offices at major installations process these applications through an expedited channel; processing times for military naturalization applicants are substantially shorter than for civilian applicants. No major rulemakings since the rule's original promulgation.

How It Works

Naturalization is the legal process by which a foreign national becomes a U.S. citizen. The Immigration and Nationality Act (INA) vests sole authority to naturalize in the Attorney General, delegated to U.S. Citizenship and Immigration Services (USCIS). No one else — not a state, not Congress directly — can grant citizenship to an individual.

The standard path requires five years as a lawful permanent resident (green card holder), physical presence in the United States for at least half that time, and continuous residence without any single absence longer than six months. During this period and up through the oath ceremony, the applicant must demonstrate "good moral character" — a flexible standard that generally disqualifies anyone convicted of an aggravated felony, involved in drug trafficking, or who committed fraud to obtain immigration benefits.

The English requirement covers everyday reading, writing, and speaking — not academic fluency. The civics test covers U.S. history and government fundamentals, drawn from a published list of 100 questions. Applicants over 50 who have held a green card for 20+ years (or over 55 with 15+ years) may take the civics test in their native language. Those over 65 with 20+ years get a simplified version.

Spouses of U.S. citizens get an accelerated path: three years instead of five, with 18 months of physical presence. The couple must have been married and living together during that entire period — separation or divorce resets the clock to the standard five-year track.

Military service offers another pathway. Under §§ 1439-1440, one year of honorable service during peacetime qualifies for naturalization with no specific residency requirement, and any service during designated hostilities (including post-9/11) allows naturalization immediately, even from overseas.

Certain categories of people are permanently barred: draft evaders during wartime, deserters from the Armed Forces, and anyone who obtained an exemption from military service on the basis of alienage and later seeks citizenship. Advocates of totalitarianism or opposition to organized government are also barred unless they can show their involvement ended more than 10 years ago.

How It Affects You

State Variations

Pending Legislation

• S 2274 — Constitutional Citizenship Clarification Act. Limits birthright citizenship for children born to parents who are unlawfully present in the United States. Status: Introduced.
• S 304 — Birthright Citizenship Act. Restricts automatic citizenship at birth to children with at least one parent who is a U.S. citizen or lawful permanent resident. Status: Introduced.
• HR 2454 — No Citizenship for Alien Invaders Act. Bars individuals who entered the U.S. unlawfully from eligibility for naturalization. Status: Introduced.
• HR 449 — Provides an expedited naturalization pathway for U.S. nationals in American Samoa. Status: Introduced.
• HR 2274 — Constitutional Citizenship Clarification Act of 2025: would bar automatic U.S. citizenship at birth for children of unlawfully present parents, diplomats, and those tied to hostile operations. Status: Introduced.
• HR 2468 — Renewing Immigration Provisions of the Immigration Act of 1929: replaces old entry-date cutoffs with a 7-year residency test for registry eligibility. Status: Introduced.
• HR 2454 — No Citizenship for Alien Invaders Act of 2025: would make anyone who entered the U.S. unlawfully ineligible for naturalization. Status: Introduced.

Recent Developments

USCIS updated the civics test content in late 2024 with a revised question pool. Processing times have fluctuated significantly, with some offices exceeding 12 months for N-400 adjudication. The asylum fee provisions added by the Laken Riley Act (2025) have increased scrutiny of immigration benefit applications generally.

• Birthright citizenship executive order challenged (2025-2026): Trump signed Executive Order 14160 on January 20, 2025 directing federal agencies to stop issuing citizenship documents to children born in the United States to parents without lawful status or temporary visa status — a direct challenge to the Wong Kim Ark interpretation of the 14th Amendment's citizenship clause. Federal district courts in Maryland, Massachusetts, and Washington immediately issued universal injunctions. In Trump v. CASA (June 27, 2025, 6-3), the Supreme Court limited the scope of universal injunctions but did not reach the constitutional merits. Subsequent class-wide certifications and state-plaintiff suits have continued to block enforcement, and the underlying constitutional question remains unresolved. Children born in the U.S. retain birthright citizenship under existing law in nearly all jurisdictions.
• N-400 processing times variability (2025-2026): USCIS naturalization application (N-400) processing times vary widely by field office — from under 6 months at efficient offices to 12-18+ months at high-volume locations (Miami, Los Angeles, New York, Chicago). DOGE-related USCIS staffing buyouts have reduced officer capacity at some offices. Applicants can check their case status at my.uscis.gov; if a case exceeds the published processing time by 90 days, an InfoPass appointment or written inquiry to the field office may prompt action. Congressmembers' offices can also make constituent service inquiries on behalf of applicants facing unreasonable delays.