1. Basic Requirements
To become a United States citizen through naturalization, an applicant must first satisfy a set of foundational criteria established by the Immigration and Nationality Act (INA). These criteria apply to most applicants, although certain categories (e.g., spouses of U.S. citizens serving abroad) have tailored rules.
- Age: Must be at least 18 years old at the time of filing the Form N400.
- Lawful Permanent Resident (LPR) status: Must hold a valid green card.
- Continuous residence: Must have lived in the United States as an LPR for a required period (see Section2).
- Physical presence: Must have been physically present in the U.S. for a set amount of time (see Section2).
- Attachment to the Constitution: Must be willing to support and defend the U.S. Constitution and its laws.
2. Residence & Physical Presence
These two requirements are often the most scrutinized.
2.1 Continuous Residence
- General rule: 5 years of continuous residence as an LPR before filing.
- Spouse of a U.S. citizen: 3 years of continuous residence, provided the spouse has been a U.S. citizen for at least 3 years.
- Military service: Service members may count time served abroad toward the residency requirement.
2.2 Physical Presence
- At least half of the required residence period must be spent physically in the U.S. (e.g., 30 of the 60 months for the 5year rule).
- Trips outside the U.S. that exceed 6 months may break continuous residence unless the applicant can prove otherwise.
3. Good Moral Character
The applicant must demonstrate good moral character for the required residency period. USCIS looks at criminal history, fraud, and other conduct that would reflect poorly on character.
- Convictions for aggravated felonies, domestic violence, or crimes involving moral turpitude typically disqualify an applicant.
- Failure to pay taxes, lying on immigration forms, or falsifying documents also affect the assessment.
- Minor traffic violations usually do not impact eligibility, but repeated offenses may.
Evidence of good moral character includes:
- Police clearance certificates (if required).
- Tax returns for the past 5 years.
- Letters of recommendation from employers, community leaders, or clergy.
4. English Language & Civics Knowledge
Applicants must pass an interview that includes an English test and a civics questionnaire.
4.1 English Test
- Reading: Ability to read a simple sentence in English.
- Writing: Ability to write a simple sentence about personal information.
- Speaking: Demonstrated through the applicants answers during the interview.
4.2 Civics Test
There are 100 possible civics questions; applicants are asked up to 10. To pass, at least 6 answers must be correct. Certain applicantsthose over 65 with 20 years of residency, or those with a physical or developmental disabilitymay take a simplified version (20 questions, 10 must be correct).
5. Exceptions & Special Cases
5.1 Military Personnel
Members of the U.S. armed forces may naturalize without meeting the usual residence and physical presence requirements if they serve honorably during designated periods of conflict.
5.2 Accommodations for Disabilities
Applicants with a disability that prevents them from meeting the English or civics requirements may request a waiver. A medical professional must certify the impairment.
5.3 Children of Naturalized Parents
Children under 18 who are lawful permanent residents and reside in the legal and physical custody of a parent who becomes a citizen may automatically acquire citizenship through the "derivation" process.
5.4 Spouse of a U.S. Citizen Working Abroad
If a U.S. citizen spouse is employed by the U.S. government, a recognized American institution of research, a public international organization, or a multilateral foreign mission, the foreignresident spouse may count time abroad toward residency.
6. Application Process Overview
- Complete Form N400, Application for Naturalization.
- Gather supporting documents (green card copy, tax returns, travel records, etc.).
- Pay the filing fee (currently $640) or request a fee waiver if eligible.
- Submit the application to USCIS.
- Attend a biometric appointment (fingerprints, photograph).
- Participate in the naturalization interview and tests.
- If approved, receive an oath ceremony notice; take the Oath of Allegiance.
Processing times vary by field office but typically range from 8 to 14 months. Checking case status online with the receipt number is recommended.
