Common Reasons Naturalization Applications Are Delayed

Applying for U.S. citizenship is an important milestone, but approval does not always follow immediately after filing Form N-400. Naturalization applications can be delayed by incomplete information, background checks, missing documents, eligibility concerns, scheduling problems, or unresolved issues in an applicant’s immigration history.

USCIS reported a national median processing time of approximately 6.4 months for nonmilitary Form N-400 applications during fiscal year 2026 through February 28, 2026. This means half of the completed cases took less time and half took longer. Processing times also vary by USCIS field office and the complexity of each application.

Understanding the common reasons naturalization applications are delayed can help applicants prepare complete filings and respond promptly when USCIS requests additional information.

Incomplete or Inconsistent Form N-400 Answers

One of the most avoidable causes of delay is an incomplete or inconsistent application. Form N-400 asks about addresses, employment, international travel, marriages, children, taxes, criminal history, immigration violations, and membership in certain organizations.

USCIS may need additional time when answers:

• Conflict with earlier immigration applications
• Leave unexplained gaps in employment or residence
• Omit international trips
• Contain inaccurate dates
• Fail to disclose an arrest or citation
• Do not match tax or immigration records

An innocent mistake does not necessarily cause a denial. However, USCIS may issue a Request for Evidence, question the applicant during the interview, or conduct further review before making a decision.

Applicants should compare Form N-400 with previous green-card applications, passports, tax returns, court records, and travel histories before filing.

Delayed Background and Security Checks

Most naturalization applicants must complete background and security screening before USCIS schedules or completes the citizenship process. These checks may include fingerprints, identity verification, immigration-record review, and searches of law-enforcement databases.

USCIS generally cannot complete naturalization until the required checks have been resolved. A case may take longer when records contain similar names, incomplete identifying information, prior immigration encounters, arrests, or data requiring confirmation from another agency.

Applicants may also be asked to attend a new biometrics appointment when fingerprints cannot be processed or when USCIS determines that updated biometrics are required. USCIS may request fingerprints, a photograph, or a signature at any point when necessary to verify identity and complete background checks.

Criminal Records and Good-Moral-Character Questions

Naturalization applicants must demonstrate good moral character during the applicable statutory period, usually the five years before filing or three years for certain applicants married to U.S. citizens. USCIS may also consider earlier conduct when it affects the applicant’s present character or eligibility.

An arrest does not automatically prevent naturalization. Nevertheless, an arrest, charge, diversion program, probation sentence, expunged record, or conviction can delay the case while USCIS obtains and reviews the relevant documents.

Applicants may need to provide:

• Certified arrest reports
• Charging documents
• Court dispositions
• Sentencing records
• Proof that probation was completed
• Evidence that fines or restitution were paid

Failing to disclose an incident may create a more serious issue than the original case because USCIS compares the application with government databases and prior immigration filings.

Missing Tax Records or Unpaid Tax Obligations

Tax problems can also slow a naturalization application. USCIS may ask whether the applicant has failed to file a required return or owes overdue federal, state, or local taxes.

An outstanding balance does not always make someone ineligible. However, the applicant may need to demonstrate that required returns were filed and that an approved payment arrangement is being followed.

Applicants filing under the three-year marriage rule may also need tax documents and other evidence showing that they have lived in a genuine marital union with their U.S.-citizen spouse during the required period.

International Travel and Continuous-Residence Concerns

Naturalization usually requires continuous residence and sufficient physical presence in the United States. Extended or frequent international travel can lead USCIS to examine whether the applicant maintained a principal home in the country.

Trips lasting more than six months may raise questions about a possible interruption in continuous residence. Absences lasting one year or longer can create more significant eligibility problems unless a legally recognized exception applies.

A case may be delayed when:

• Travel dates are missing or inaccurate
• Passport stamps conflict with Form N-400
• The applicant worked or maintained a home abroad
• Tax returns listed the applicant as a nonresident
• USCIS needs additional evidence of continued U.S. ties

Applicants should calculate every trip carefully and retain records such as passports, airline itineraries, employment documents, leases, and tax returns.

A Pending Petition to Remove Conditions

A conditional permanent resident who obtained a green card through marriage normally must file Form I-751 to remove the conditions. In some cases, the person may become eligible to file Form N-400 while the I-751 petition remains pending.

USCIS must generally resolve the person’s permanent resident status before approving naturalization. The agency may review both applications together or schedule a combined interview. Delays can occur when the I-751 petition requires additional evidence, involves a waiver, or raises questions about whether the qualifying marriage was genuine.

Requests for Additional Evidence

USCIS may issue a Request for Evidence when the existing record does not establish eligibility. The request identifies documents or explanations the applicant must provide by a stated deadline.

Common requests involve:

• Marriage and divorce records
• Evidence of residence with a U.S.-citizen spouse
• Tax transcripts
• Criminal court records
• Child-support payment records
• Selective Service information
• Proof of lawful permanent residence
• Translations of foreign-language documents

A late or incomplete response may prolong the case and can result in denial. Applicants should respond directly to every item rather than sending unrelated documents and assuming USCIS will identify the missing information.

Interview or Testing Issues

During the naturalization interview, a USCIS officer reviews the application and tests the applicant’s English and knowledge of U.S. civics unless an exemption or accommodation applies.

A decision may be delayed when the applicant:

• Does not pass part of the English or civics examination
• Needs a second testing appointment
• Provides information that differs from Form N-400
• Arrives without requested original documents
• Requires additional review of eligibility
• Submits a medical-disability exception that needs further evaluation

Applicants who fail part of the test are generally given another opportunity to take the failed portion. The additional appointment naturally extends the processing period.

Missed Appointments and Address Problems

Missing a biometrics appointment, interview, or oath ceremony can significantly delay naturalization. Applicants should follow the notice instructions when requesting rescheduling rather than simply failing to appear.

Address changes can create similar problems. A person who moves but does not properly update USCIS may never receive an interview notice, evidence request, or oath-ceremony appointment.

An online USCIS account can help applicants review notices and monitor case activity, but it does not replace the requirement to report a change of address through the correct procedure.

Delays After the Naturalization Interview

USCIS may approve, continue, or deny the application after the interview. A continued case generally means that the applicant must provide more evidence, retake part of the examination, or wait for additional review.

USCIS ordinarily has 120 days from the initial naturalization examination to issue a decision. When no decision is issued within that period, federal law may permit the applicant to seek review in a U.S. district court, although the appropriate strategy depends on the case’s circumstances.

Even after approval, citizenship is not complete until the applicant attends a ceremony, takes the Oath of Allegiance, and receives a Certificate of Naturalization. Ceremony scheduling or a requested legal name change may add time after the application itself has been approved.

Applicants dealing with extended processing, evidence requests, criminal records, travel concerns, or unresolved immigration history may consider consulting KC Immigration Lawyer to evaluate the reason for the delay and determine what documentation or follow-up may be appropriate.

Key Takeaways

Naturalization applications may be delayed because of incomplete Form N-400 answers, background checks, criminal-history questions, tax concerns, extensive international travel, missing evidence, pending immigration petitions, or interview and testing issues.

Some delays are routine and reflect the workload of the assigned USCIS field office. Others indicate that the agency needs additional evidence before determining whether the applicant satisfies every citizenship requirement.

Accurate forms, complete supporting records, prompt responses, and careful preparation for the naturalization interview can reduce preventable delays. Applicants should also monitor their case, keep their address current, and retain copies of everything submitted to USCIS.