Lawful Permanent Resident Status
You must have been a lawful permanent resident (green card holder) for at least 5 years, or 3 years if you are married to a U.S. citizen. You cannot naturalize without a valid green card.
What Is Naturalization?
Understanding Naturalization
Naturalization is the legal process by which a foreign national becomes a U.S. citizen. It is the final milestone in the immigration journey. As a naturalized U.S. citizen, you gain the right to vote, sponsor family members more broadly, travel freely with a U.S. passport, and work in federal government positions.
Form N-400 is the Application for Naturalization. Filing this form initiates a process that includes biometrics, a civics and English test, and a formal oath ceremony where you renounce allegiance to your former country and pledge your oath to the United States.
Naturalization is a significant civic milestone, not merely a bureaucratic step. The oath ceremony is a meaningful moment in the lives of new citizens, and becoming a U.S. citizen provides lasting legal protections and opportunities.
Eligibility Requirements
Who Can Apply for Naturalization?
To file Form N-400, you must meet specific eligibility criteria.
Continuous Residence
You must have maintained continuous residence in the United States as a permanent resident during the required period (5 or 3 years). Absences longer than 6 months may break continuity; absences over 1 year generally do.
Physical Presence
During your required residency period, you must have been physically present in the U.S. for at least 30 months (5 years) or 18 months (3 years). Brief trips abroad do not interrupt this; only extended absences matter.
Good Moral Character
You must demonstrate good moral character throughout your permanent resident period. Criminal convictions, especially felonies, DUIs, or crimes of moral turpitude, can disqualify you. Immigration fraud or tax evasion are serious problems.
English Language Ability
You must demonstrate ability to read, write, and speak English at a basic level. This is tested during the N-400 interview. Exemptions exist for seniors (over 50 with 20 years residency or 55 with 15 years).
U.S. Civics Knowledge
You must pass a civics test on U.S. government, history, and rights. You must answer at least 6 of 10 civics questions correctly. The civics test is only waived for seniors over 65 with 20+ years residency.
The Civics Test
Understanding the Civics Test
The civics exam covers U.S. government, history, rights, and responsibilities. Preparation is key to success.
The N-400 civics test consists of 10 questions selected from a published list of 100 possible civics questions. USCIS randomly selects 10 questions and asks them during your naturalization interview. You must answer at least 6 correctly to pass.
Topics Covered in the Civics Test:
- Structure of the U.S. government (branches, Congress, President, courts)
- Constitutional rights and freedoms (Bill of Rights, amendments)
- The Constitution and its purposes
- The Electoral College and presidential elections
- State and local government functions
- U.S. history and key historical figures
- Citizenship rights and responsibilities
- The military and symbols of the nation
Preparing for the Test: USCIS provides the complete list of 100 civics questions and answers free online. You can study them on the USCIS website or use approved civics study materials. Many libraries and community organizations offer free naturalization preparation classes. Since only 10 questions are asked randomly, thorough study of all 100 is the best preparation strategy.
The test is administered orally by a USCIS officer at your naturalization interview. There is no written civics exam. The officer reads or shows you each civics question and listens to your answer. Accuracy is important, but some interpretation is allowed if your answer demonstrates understanding of the correct concept.
Disqualifiers
Common Disqualifiers for Naturalization
Certain circumstances can bar you from naturalization. Be aware of these issues before filing.
Criminal Convictions
Crimes of moral turpitude, murder, drug trafficking, and violent felonies generally disqualify you. Even misdemeanor drug offenses can be problematic. DUI convictions require careful evaluation.
Tax Issues & Financial Fraud
Failing to file tax returns, tax evasion, or financial fraud demonstrates lack of good moral character. You must demonstrate compliance with U.S. tax obligations.
Immigration Fraud or False Statements
If you obtained your green card through fraudulent means, committed immigration fraud, or made false statements to immigration authorities, you are deportable and ineligible for naturalization.
Broken Continuous Residence
Extended trips outside the U.S. (more than 6 months) during your required residency period break continuous residence. Trips over a year generally disqualify you entirely.
Renunciation or Dual Allegiance
If you have taken an oath of allegiance to a foreign country or served in a foreign military after obtaining your green card, this may disqualify you from naturalization.
Terrorism or Security Concerns
Any involvement with terrorist organizations, support for terrorism, or security concerns will result in denial. Even providing material support to foreign terrorist organizations is disqualifying.
Required Documents
Documents Needed for N-400 Filing
Submit complete documentation to avoid delays.
Core N-400 Application:
- Form N-400 (Application for Naturalization), fully completed
- Copy of your valid green card (front and back)
- Passport (biographical page)
- State ID or driver's license
Financial & Tax Documentation:
- Federal tax returns for the past 5 years (3 years if married to U.S. citizen)
- W-2 forms or 1099s if self-employed
- Tax transcripts from the IRS
- Proof of employer (current employment letter)
Personal & Civic Information:
- Birth certificate
- Marriage certificate(s) or divorce decrees, if applicable
- Children's birth certificates (if applicable)
- Proof of continuous residence (lease agreements, utility bills, mortgage statements from past 5 years)
- Travel history and any absences from the U.S. (passport stamps, airline tickets)
Medical, Criminal & Security:
- Form I-693 (Medical Examination, if required)
- Police clearance certificates from all countries where you have lived
- Any arrest or conviction records (even if minor or dismissed)
- Evidence of good moral character (letters of support, community involvement)
The Naturalization Process
From Application to Oath Ceremony
Here's what to expect from filing through the oath ceremony.
01
File N-400
Submit Form N-400 and supporting documents to USCIS. Filing fee is $640 ($655 for biometric fee, total $1,295 as of 2026).
02
Biometrics & Interview
USCIS schedules you for biometrics (fingerprinting) and naturalization interview. Interview typically occurs 3–6 months after filing. You meet with USCIS officer for English/civics testing and application review.
03
Decision
USCIS makes a decision: approved, denied, or continue (additional information needed). Most decisions are made at the interview; some require further review.
04
Oath Ceremony
Upon approval, you are scheduled for oath ceremony. You take the Oath of Allegiance, pledging loyalty to the United States. Your Certificate of Naturalization is issued; you are now a U.S. citizen.
Common Questions
Frequently Asked Questions
It depends on the offense and outcome. Minor arrests that resulted in dismissal or acquittal may not prevent naturalization. However, convictions for crimes of moral turpitude, drug offenses, or violent crimes will almost certainly disqualify you. Even a DUI conviction can be problematic. Consult with an attorney before filing if you have any criminal history.
Not automatically. Your birth country's laws determine whether you lose citizenship upon naturalization in the U.S. Some countries recognize dual citizenship; others do not. You should research your country's laws before applying for naturalization if dual citizenship matters to you. The U.S. does not object to dual citizenship, though you must renounce your old allegiance in the oath.
If you fail the civics or English test, USCIS will reschedule you for a second interview, typically 60–90 days later. You are given a second opportunity to pass. If you fail the second time, your N-400 application is denied. You can reapply after 12 months.
Yes, you can travel briefly while your N-400 is pending. However, if your interview is scheduled and you miss it, your application may be denied. Plan any international trips carefully and reschedule your interview if necessary. Keep all travel records and documentation.
The oath ceremony is typically held at a federal courthouse or USCIS office. You stand in a group with other applicants and take the Oath of Allegiance, swearing or affirming loyalty to the United States. The ceremony usually includes remarks from a judge or official, the reading of the oath, and issuance of your Certificate of Naturalization. You become a U.S. citizen at that moment. Family and friends are typically welcome to attend.