Naturalization as a U.S. Citizen: Path to American Citizenship

Last Updated: September 2026

Naturalization allows eligible permanent residents to become U.S. citizens. Most applicants qualify after five years of permanent residence, while certain spouses of U.S. citizens may qualify after three years. Other provisions apply to qualifying military service members and certain additional applicants.

Citizenship can provide lasting benefits, including voting in federal elections, obtaining a U.S. passport, and additional opportunities to sponsor family members. Before applying, however, permanent residents should review their eligibility and immigration history. A successful green card renewal does not establish that a person qualifies for naturalization.

Myers Immigration Law assists individuals and families with naturalization, including those who obtained permanent residence through employment, investment, or family relationships.

Basic Naturalization Requirements

Under the ordinary five-year provision, an applicant generally must:

• Be at least 18 when filing;
• Have been lawfully admitted for permanent residence;
• Satisfy five years of continuous residence;
• Have been physically present in the United States for at least 30 months during the five years before filing;
• Have resided for at least three months in the state or USCIS district where the application is filed;
• Establish good moral character; and
• Meet the applicable English, civics, attachment to the Constitution, and Oath of Allegiance requirements.

Different requirements or exceptions may apply to military service members, certain spouses of U.S. citizens employed abroad, and applicants qualifying for age-based or disability-related exceptions.

The Three-Year Rule: Marriage and Living Together

Certain spouses of U.S. citizens may qualify after three years of permanent residence, with at least 18 months of physical presence during the preceding three years. They generally must also establish that they lived in marital union with their spouse throughout the three years before filing and that the spouse was a U.S. citizen throughout that period. The marriage must continue through naturalization.

Being legally married is not always enough. USCIS generally interprets living in marital union to mean actually residing together.

In one matter handled by Myers Immigration Law, a temporary assignment that involved the spouses living apart affected the three-year filing strategy, and the applicant waited before pursuing naturalization.

That result should not be treated as a rule for every work assignment. The law recognizes an exception for involuntary separation caused by circumstances beyond the couple’s control, including military service or essential business or occupational demands. The reason for living apart and the supporting evidence therefore matter.

Applicants should evaluate whether they qualify under the three-year provision, including any applicable exception, or whether the ordinary five-year provision provides a better filing basis. The five-year provision does not require marriage to a U.S. citizen.

A person need not have obtained the green card through marriage to qualify under the three-year provision. See USCIS guidance on marriage and marital union.

Filing Early and Reviewing Travel

Certain applicants may file Form N-400 up to 90 days before completing the required three-year or five-year continuous-residence period. Other eligibility requirements must already be satisfied. Early filing does not shorten the required period of marriage to a U.S. citizen.

Travel requires separate attention. Physical presence measures time actually spent in the United States; continuous residence concerns maintaining residence here.

An absence of more than six months but less than one year generally creates a presumption that continuous residence was interrupted. An absence of one year or more generally breaks continuous residence, subject to limited exceptions. Repeated shorter trips can also raise questions about where the applicant actually lives.

Applicants should reconstruct their travel history and evaluate any extended absences before selecting a filing date. USCIS explains these requirements in its continuous residence guidance.

Good Moral Character Requires Affirmative Evidence

Good moral character has always been a naturalization requirement. Under its August 2025 policy memorandum, USCIS placed renewed emphasis on evaluating an applicant’s character affirmatively, beyond checking for disqualifying criminal conduct.

A clean criminal record and compliance with tax obligations remain important, but applicants should also consider what evidence demonstrates their character and responsibilities.

Depending on the circumstances, useful evidence may include:

• Employment history and reliable performance of responsibilities;
• Support for children or other family members;
• Community involvement, education, or volunteer service;
• Specific, factual letters from people who know the applicant; and
• Evidence of rehabilitation when past misconduct requires explanation.

There is no universal requirement that every applicant volunteer or submit an identical package of character letters. Evidence should reflect the person’s actual circumstances. Positive evidence also does not override a statutory bar to eligibility.

USCIS’s good moral character guidance should be considered alongside the applicant’s complete history, including relevant conduct outside the ordinary three-year or five-year period.

Unfiled Taxes and Review of a Naturalization Denial

Failure to file required tax returns or satisfy tax obligations can affect a naturalization application. The circumstances matter, including whether filing was required, why the problem occurred, and what steps the applicant took to address it.

Myers Immigration Law handled a matter involving a naturalization applicant who had not filed required tax returns. We helped the client address the missing filings and presented the corrective steps at the subsequent naturalization hearing, where we successfully argued the client’s position.

A denial does not necessarily end the process. Form N-336 allows an applicant to request a hearing on an N-400 denial. The reviewing officer can reconsider the application and receive relevant new evidence and testimony; review is not limited to the documents considered in the original decision.

However, correcting a problem after denial does not guarantee approval or erase the earlier conduct. Some eligibility requirements must have been satisfied when the application was filed, and later compliance does not necessarily overcome a good moral character issue.

Tax concerns are best evaluated before filing. If USCIS has already denied an application, promptly review the denial and hearing deadline to determine whether a hearing, a later application, or another response is appropriate. The successful result in one matter does not establish that the same approach will work in another.

USCIS Has Resumed Neighborhood Investigations

USCIS resumed neighborhood investigations in August 2025 and issued further Policy Manual guidance in August 2026.

Under current guidance, these investigations generally apply unless waived. They may involve information from neighbors, employers, coworkers, or others familiar with the applicant’s residence, activities, and character.

USCIS may request supporting testimonials, and investigations may help verify information provided in the application. This does not mean that every applicant will receive an unannounced home visit.

Applicants should ensure that their address history, employment history, and supporting statements are accurate and consistent. See the USCIS guidance on investigations and security checks.

Why Naturalization Requires More Review Than a Green Card Renewal

Form I-90 generally concerns replacing or renewing evidence of permanent resident status. Form N-400 requires a broader examination of eligibility for citizenship, including whether permanent residence was lawfully obtained.

An issue that did not arise during a previous card renewal may therefore become significant during naturalization. Renewal approval does not cure an underlying immigration violation or establish that USCIS considered and resolved every potential concern.

Before filing, applicants should review prior visa and immigration applications, the original basis for permanent residence, criminal or court records, tax issues, and any inconsistent information.

If naturalization review reveals a ground of deportability, the consequences may extend beyond denial to removal proceedings. A naturalization denial does not automatically terminate permanent resident status, but the underlying reason for denial may create separate risks.

Green card renewal can also involve eligibility and background checks. It should not be assumed to provide a safe alternative when a serious issue exists.

Employment in the Cannabis Industry

State authorization of a cannabis business does not establish compliance with federal controlled-substance laws.

USCIS guidance identifies employment in the marijuana industry as conduct that may violate federal law and affect good moral character. Depending on the underlying conduct and immigration history, related issues may also create inadmissibility or deportability concerns.

The consequences are not determined by a job title alone. The person’s duties, conduct, timing, and any convictions or legally valid admissions require individual analysis.

Applicants with cannabis-related employment, ownership, or other involvement should obtain advice before filing. See USCIS guidance on controlled-substance violations.

Mistaken Beliefs About Citizenship Through Parents

At Myers Immigration Law, we have consulted with permanent residents who believed they became U.S. citizens when their parents naturalized and had repeatedly represented themselves as citizens.

Some sought advice only when an agency requested an updated green card to replace an older card without an expiration date. Reviewing their history revealed that they had not acquired citizenship as they believed.

A parent’s naturalization does not automatically make every child a citizen. The result depends on the law in effect and facts such as the child’s age, immigration status, residence, and custody.

False claims to U.S. citizenship can have exceptionally serious consequences, including permanent inadmissibility and deportability. In ordinary family- and employment-based immigration cases, a waiver is generally unavailable.

A mistaken belief alone does not necessarily prevent these consequences. A narrow statutory exception requires, among other conditions, that each parent is or was a U.S. citizen, that the person permanently resided in the United States before age 16, and that the person reasonably believed they were a citizen when making the claim.

The date, wording, purpose, and circumstances of each representation matter. Form N-400 expressly asks about prior claims to U.S. citizenship; the current Form I-90 does not contain the same question.

Anyone uncertain about citizenship through a parent should have that question resolved before making further representations or submitting an application. USCIS discusses the limited false-claim exceptions.

Denaturalization Makes Accuracy Important Beyond Approval

The Trump Administration has renewed its emphasis on denaturalization. The Department of Justice’s June 2025 enforcement memorandum identifies revocation of unlawfully obtained citizenship as a priority.

Civil denaturalization may be pursued when citizenship was illegally procured or obtained through concealment of a material fact or willful misrepresentation. It requires a legal basis; it does not follow automatically from an accusation or an ordinary application error.

The practical lesson is to investigate unresolved history and provide accurate information before filing. Approval does not necessarily eliminate a serious underlying eligibility problem. See the DOJ enforcement priorities.

The Application, Interview, and Citizenship Test

After reviewing eligibility, an applicant submits Form N-400 with the appropriate supporting evidence. USCIS conducts required checks, may schedule biometrics, and generally interviews the applicant before deciding the case.

The interview addresses the application and eligibility as well as English and civics testing. Applicants should be prepared to explain relevant changes since filing.

Under current USCIS guidance, applicants who filed on or after October 20, 2025, take the 2025 civics test. The standard test uses up to 20 questions from a list of 128, with 12 correct answers required to pass. Earlier filings generally use the 2008 test. Exceptions and accommodations may apply.

Use the current USCIS study materials. Approval generally leads to an Oath of Allegiance ceremony, when the applicant becomes a citizen.

Preparing for Naturalization

Many permanent residents can pursue naturalization successfully with organized preparation. The first step is to confirm the appropriate eligibility provision, review the immigration record, and identify any issues requiring attention before filing.

Gather your green card, relevant passports and travel dates, prior immigration filings, and applicable marriage, tax, or court records. Consider what genuine evidence supports good moral character.

The above is informational and not intended to be legal advice. Please consult with an experienced business immigration attorney on your specific facts and circumstances before proceeding with any U.S. immigration strategy.