Adjudication of Naturalization — How USCIS Reviews N-400s and What Applicants Should Do

— What “adjudication” means and why it matters

Step 1 — Filing and initial intake

File N-400 using the USCIS filing method you prefer (online or paper) and include required supporting documents listed in the instructions. USCIS performs an initial eligibility check and creates or updates the applicant’s A-file. If the applicant moved after filing, update the address promptly to avoid misplaced mail.

Step 2 — Biometrics & security checks

USCIS will schedule biometrics (fingerprints and photo) for most applicants to run FBI name checks and other security screenings. These background/security checks are required and typically must be completed before USCIS schedules the naturalization interview. 

If USCIS cannot complete name checks quickly (for example, because of records from other agencies or additional investigation), processing may be delayed pending security clearances. 

Step 3 — The naturalization interview

Most applicants appear for a naturalization interview at their local USCIS field office. The adjudicating officer reviews the N-400, asks questions about the application and background,
verifies identity and continuous residence/physical presence, assesses English and civics ability (unless exempt), and may request original supporting documents. The officer also records testimony that becomes part of the written record. 

USCIS may also conduct pre-interview reviews, transfer jurisdiction if the applicant moved, or in narrow categories waive interviews when the file provides sufficient evidence.

Step 4 — Decision, grant, denial, or continuation

After the interview USCIS either grants naturalization (followed by a notice to attend an oath ceremony), continues the application (requests more evidence or schedules another hearing), or issues a denial (with reasons). If USCIS grants, the applicant receives an oath ceremony date and becomes a U.S. citizen upon taking the oath.

Common reasons for delay or denial

  • Incomplete/incorrect paperwork — missing signatures, mismatched names, or incomplete evidence.
  • Unresolved background checks — FBI name checks, criminal records or other inter-agency flags that require further investigation. 
  • Criminal history or moral character concerns — convictions, deferred adjudication, or undisclosed arrests can lead to denials under INA §101(f) / §316. 
  • Continuous residence/physical presence problems — long absences or misstatements about travel can affect eligibility.
  • Failure to meet English/civics requirements — unless exempt due to age/medical disability. 

Special categories & exemptions

USCIS recognizes exceptions to the English/civics tests for certain elderly or long-term residents and special rules for service members and their dependents. Military naturalization rules and age/exemption provisions are detailed in the USCIS guidance.

Appeals & post-decision options

  • Form N-336 (Request for Hearing on a Decision) — when USCIS denies naturalization, an applicant can request a hearing before an immigration officer by filing N-336 within the time allowed. (Read the denial notice for exact timing and instructions.) 
  • Motions & federal review: in some cases, counsel may file motions to reopen/reconsider or seek district-court review (habeas) depending on the facts and jurisdiction. Consult counsel promptly after a denial. 

Practical tips to avoid delays

  1. File complete, signed forms and include clear copies of required evidence (green card copy, tax returns where requested, marriage/divorce records, selective service evidence where applicable).
  2. Attend biometrics appointment — missing biometrics is a common avoidable delay. Follow reschedule instructions exactly. 
  3. Disclose arrests and convictions up front — gather certified dispositions and court documents to show outcomes rather than relying on USCIS to discover them later. 
  4. Monitor processing times for your local field office and submit an e-Request or service request if your case exceeds normal processing windows. Check USCIS processing times for the most recent estimates. 

Copy-paste applicant & intake checklist

Naturalization intake checklist (copy into case file)
- Applicant full name, DOB, A-number, contact info, and current address
- Copy of current Permanent Resident Card (front & back)
- File N-400 (signed) + required supporting documents (as listed in N-400 instructions)
- Evidence of continuous residence & physical presence (leases, employer letters, tax returns)
- Criminal history: arrest reports, charging documents, dispositions, probation records
- Biometrics appointment notice & confirmation
- Records of prior immigration filings (I-130, I-485, prior denials, removal proceedings)
- Medical exception documentation (if claiming disability waiver for test)
- Proof of Selective Service (if applicable)
- Translation & certified copies for non-English records

Frequently asked questions

Q — How long does naturalization take in 2026?

Processing times vary by field office and applicant background. USCIS publishes processing-time estimates and local field office medians; check the USCIS processing times tool for current data. 

Q — What happens if my FBI name check is pending?

USCIS may delay interview scheduling or final decision until name checks and inter-agency security checks complete. Counsel can sometimes request status updates, but these checks are performed by external agencies and timing varies. 

Q — If USCIS denies, can I still get citizenship in court?

Some denials can be appealed via N-336 or reviewed in federal court (habeas) in limited circumstances. Consult counsel immediately to determine the best post-denial strategy. 

Authoritative resources