Fingerprinting Requirements for US Citizenship and Naturalization: A Complete 2026 Guide

If you’re on the path to US citizenship, fingerprinting is one of the first concrete steps you’ll take after submitting your application. It’s required by law, it’s non-negotiable, and missing your appointment can cause your entire naturalization application to be delayed — or denied.

This guide covers everything applicants and their immigration attorneys need to know about the USCIS fingerprinting process for naturalization — what it involves, what to bring, how long it takes, what happens to your prints after the appointment, and the most common mistakes that cause delays.

What Is the USCIS Biometrics Appointment?

When USCIS refers to ‘fingerprinting’ for naturalization, they officially call it a biometrics appointment. At this appointment, a USCIS officer collects three types of information from you:

• Your fingerprints — all ten, captured digitally using electronic Live Scan technology
• Your photograph — a digital photo taken at the Application Support Center
• Your signature — collected electronically on a signature pad

Together, these three elements are referred to as biometrics. They are used to verify your identity and run a comprehensive background check through the FBI and other federal agencies before your naturalization interview is scheduled.

As of April 2024, USCIS removed the separate biometrics fee for most naturalization applications, including Form N-400. You no longer need to submit an additional fee for your biometrics appointment — the cost is included in the base application fee.

Why Fingerprinting Is Required for Naturalization

Fingerprinting is a mandatory part of the naturalization process under federal law. USCIS requires it for three core reasons:

Identity Verification

Fingerprints are biologically unique to each individual and cannot be changed or falsified. USCIS uses your fingerprints to confirm that you are the person who submitted the N-400 application — protecting the process against identity fraud. Name-based checks alone are insufficient because names can be common, misspelled, or changed.

FBI Criminal Background Check

Your fingerprints are submitted to the FBI’s Criminal Justice Information Services (CJIS) Division, which checks them against national law enforcement databases. The FBI also conducts a National Name Check Program search. USCIS uses the results of this check to determine whether you meet the ‘good moral character’ requirement for naturalization. The FBI background check result is valid for 15 months — if your naturalization is not completed within that window, you will need to be re-fingerprinted.

National Security Screening

In addition to the FBI check, USCIS conducts checks against national security databases. This screening is required for all naturalization applicants regardless of age, background, or immigration history. There are no exemptions based on prior approvals or existing immigration status.

Step-by-Step: The Fingerprinting Process for Naturalization

1. File Form N-400 — Application for Naturalization. The naturalization process begins when you file Form N-400 with USCIS. Once your application is received and accepted, USCIS will schedule you for a biometrics appointment. You do not need to do anything to request the appointment — it will be scheduled automatically.
2. Receive your biometrics appointment notice (Form I-797C). USCIS will mail you an appointment notice within approximately 4–6 weeks of receiving your N-400. The notice will include the date, time, and location of your appointment at a designated Application Support Center (ASC). Check your mail carefully — missing this notice is one of the most common causes of appointment delays.
3. Review the biometrics code on your notice. USCIS places a biometrics code in the upper right corner of your appointment notice. Code 1 indicates fingerprints, photo, and index fingerprint. Code 2 indicates photo, signature, and index fingerprint. Code 3 indicates all of the above plus ten fingerprints. For naturalization (N-400), you will typically receive Code 3, meaning all biometrics are required.
4. Attend your ASC appointment. On the date and time listed on your notice, go to the designated Application Support Center. Arrive at least 15 minutes early. The appointment itself typically takes 15–30 minutes. You cannot bring guests or family members into the fingerprinting area.
5. FBI background check processing. After your appointment, your fingerprints are electronically transmitted to the FBI. The FBI checks them against its national criminal database and the National Name Check Program. USCIS will review the results — this is completed before your naturalization interview is scheduled. The background check result is valid for 15 months from the date of collection.
6. Proceed to your naturalization interview. Once USCIS confirms your background check has cleared, you will be scheduled for your naturalization interview. The interview tests your English language ability and knowledge of US civics and history.

What to Bring to Your Biometrics Appointment

Bring the following to your ASC appointment — missing any of these can result in being turned away:

• Your biometrics appointment notice (Form I-797C) — the original, not a copy
• A valid government-issued photo ID — passport, driver’s license, state ID, or Permanent Resident Card (green card)
• Any additional documents listed on your appointment notice

Do not bring: children, guests, food, or beverages inside the ASC. Most centers do not allow them past the waiting area.

If you have received multiple ASC notices for the same application — for example, if you rescheduled — bring all notices to your appointment.

What If You Need to Reschedule?

USCIS allows you to reschedule your biometrics appointment, but only for a valid reason. Accepted reasons include medical issues, family emergencies, and documented conflicts. To reschedule, contact USCIS at 800-375-5283 before your scheduled appointment date. Do not simply miss the appointment — if you fail to appear and do not reschedule, USCIS may consider your N-400 application abandoned and deny it.

If you are hospitalized, homebound due to disability, or otherwise physically unable to travel to an ASC, inform USCIS immediately. In documented cases, USCIS will send a representative to your home or medical facility to collect your biometrics.

Special Situations

Military Service Members

Active duty service members and certain veterans may be able to satisfy the fingerprint requirement using previously collected enlistment fingerprints or prior USCIS fingerprint records, under the Kendell Frederick Citizenship Assistance Act (KFCAA). USCIS will determine whether previously collected prints are sufficient — if not, they will notify you and schedule a new appointment. Service members deployed overseas and unable to appear are not penalized for missing fingerprinting appointments.

Applicants with Medical Conditions Affecting Fingerprints

Some applicants have conditions that affect the quality of their fingerprints — manual laborers, chemotherapy patients, and others may have worn or altered ridge detail. Inform the USCIS officer at your appointment about your condition. The officer may attempt multiple captures or use alternative collection methods. If prints cannot be collected at all, USCIS may issue a fingerprint waiver after multiple failed attempts.

Applicants Living Outside the United States

If you are applying for naturalization while residing outside the US — for example, a military dependent — USCIS may schedule your biometrics collection at a US Embassy, consulate, or military installation abroad. In this case, you may be exempt from the standard ASC appointment process. Check your appointment notice carefully for location details.

What Happens After Your Fingerprints Are Taken?

Once your fingerprints are captured at the ASC, the process moves forward automatically. Here’s what happens behind the scenes:

• Your fingerprints are electronically transmitted to the FBI within 24–48 hours of your appointment
• The FBI checks your prints against its national criminal history database and name check program
• USCIS also runs checks against Interpol, Department of Defense, and other national security databases
• Results are returned to USCIS — processing typically takes several weeks
• Once all checks clear, USCIS schedules your naturalization interview
• Your background check remains valid for 15 months — if your interview is not completed within that window, USCIS will require new biometrics

You do not need to do anything to follow up on the background check. USCIS will contact you when your interview is scheduled. If there is a discrepancy in your records — a name match or a record that needs resolution — USCIS may request additional information or schedule a second appointment.

Information for Immigration Law Firms

Immigration attorneys and law firms frequently need a reliable Live Scan fingerprinting provider for their naturalization clients in the Los Angeles area. MR Fingerprints works directly with immigration law firms to provide:

• Fast, accurate Live Scan fingerprinting for N-400 applicants and all other USCIS applications
• Same-week and same-day appointments available — critical for clients with tight processing timelines
• Re-print services for applicants whose prints were rejected by the FBI
• FD-258 ink fingerprint cards for applications requiring physical cards
• Bilingual support — Spanish-speaking staff available for your clients
• Convenient downtown Los Angeles location — easily accessible for clients across the greater LA metro area

If your firm regularly refers clients for fingerprinting, contact us to discuss a referral arrangement. We can ensure your clients are seen quickly and accurately, reducing the risk of biometrics-related delays in your cases.

📞  Contact MR Fingerprints to discuss law firm referral arrangements → 213-761-5883  |  info@mrfingerprints.com

Common Questions About USCIS Fingerprinting for Naturalization

How long does the USCIS biometrics appointment take?

The appointment itself typically takes 15–30 minutes. However, wait times at busy Application Support Centers can extend your total visit to 45–60 minutes. Arrive early and bring something to read. The fingerprinting, photo, and signature collection are quick — the wait is usually the longest part.

Can I walk in without an appointment?

No. You must attend the specific appointment scheduled by USCIS at the designated ASC. Walk-ins are not accepted for USCIS biometrics appointments. If you need to reschedule, contact USCIS at 800-375-5283 before your scheduled date.

What if my fingerprints are rejected?

If the FBI cannot read your prints — due to smudging, insufficient ridge detail, or worn fingerprints — USCIS will notify you and schedule a second appointment. If prints cannot be obtained after multiple attempts, USCIS may issue a fingerprint waiver and proceed without them. MR Fingerprints offers re-print services for applicants who need a second attempt before their USCIS appointment.

How long does the background check take after the appointment?

The FBI typically returns results within several weeks. USCIS will not schedule your naturalization interview until the background check is cleared. If you have been waiting more than three months since your biometrics appointment without receiving an interview notice, contact USCIS to inquire about the status of your application.

Do I need to be fingerprinted again if my naturalization takes a long time?

Yes — if your naturalization process takes longer than 15 months from the date your fingerprints were collected, the FBI background check result expires. USCIS will require you to be re-fingerprinted before your interview can proceed. This happens more often than people expect — naturalization processing times can vary significantly. If you are approaching the 15-month window, contact USCIS proactively.

Is there a fee for the biometrics appointment?

As of April 2024, USCIS removed the separate biometrics fee for most applications, including Form N-400. You no longer pay an additional fee for your biometrics appointment — it is included in the standard N-400 filing fee. Always check the current USCIS fee schedule at uscis.gov before filing, as fees are subject to change.

Can MR Fingerprints help with my USCIS biometrics appointment?

MR Fingerprints does not replace your USCIS ASC appointment — that appointment is mandatory and set by USCIS. However, we can help in several ways: we provide Live Scan fingerprinting for other immigration applications (green card, work permits, visa applications), we offer re-print services if your USCIS prints were rejected, and we provide FD-258 ink fingerprint cards for applications that require physical cards. Contact us and we’ll let you know how we can support your specific situation.

Ready to Get Started?

Whether you are a naturalization applicant preparing for your biometrics appointment, or an immigration law firm looking for a reliable fingerprinting partner for your clients, MR Fingerprints is here to help.

We provide fast, accurate Live Scan fingerprinting and FD-258 ink card services from our downtown Los Angeles location — with same-week appointments available and bilingual staff on hand.

📞  Have questions? Contact us