Selective Service and Your N-400: Who Must Register, What If You Didn't, and What's Changing
If you’re a man who lived in the United States at any time between your 18th and 26th birthdays, Form N-400 will ask whether you registered with the Selective Service System. The officer will go over that answer at your interview. Selective Service also shows up on the civics test:
Q72. It is important for all men age 18 through 25 to register for the Selective Service. Name one reason why. Accepted answers: Required by law · Civic duty · Makes the draft fair, if needed
Here’s what the rule means for your application, and what changed in 2026.
Who has to register
According to Selective Service, almost all men who are U.S. citizens or immigrants living in the U.S. and are 18 through 25 must register. That includes:
- Green card holders (permanent residents)
- Refugees, asylees and parolees
- Undocumented immigrants
- Dual nationals
The main exception for immigrants: men who were in the U.S. on a valid nonimmigrant visa (for example, a student or work visa) and kept that status the whole time are not required to register. Men who didn’t live in the U.S. at any point between 18 and 26 weren’t required either.
You’re supposed to register within 30 days of your 18th birthday. Selective Service accepts late registration until you turn 26. After that, you can’t register at all. Registration is free and takes a few minutes online.
Many men are already registered without knowing it. The USCIS Policy Manual says USCIS sends information to Selective Service for male green card applicants aged 18 to 26 who apply for adjustment of status. Many states also register young men when they get a driver’s license. Check your status with the Selective Service verification tool.
What the N-400 asks
The current Form N-400 (edition 01/20/25), Part 9, asks:
- 22.a. Are you a male who lived in the United States at any time between your 18th and 26th birthdays? (Answer “No” if you were a lawful nonimmigrant for that entire time.)
- 22.b. If yes, did you register?
- 22.c. If yes, your date registered and Selective Service number.
Get your number from the verification tool before you file. It’s also a common question in the “have you ever” review at the interview. See our guide to N-400 Part 9 words.
If you didn’t register: it depends on your age
USCIS denies naturalization when an applicant refused to register or “knowingly and willfully” failed to register during the period that counts for good moral character. But failing to register is not a permanent bar. The N-400 instructions give this breakdown:
| Your age when you apply | What the instructions say |
|---|---|
| Under 26 | Register before you apply, then answer 22.b. and 22.c. |
| 26 through 30 (26 through 28 if applying as the spouse of a U.S. citizen) | Explain why you didn’t register in Part 14, and provide a status information letter (see the update below) |
| 31 or older (29 or older for the spouse-of-a-citizen route) | No explanation or letter needed |
Why 31? The registration duty ends at 26, and most applicants need 5 years of good moral character before filing (3 years for spouses of U.S. citizens). Once you’re past 31 (or 29), any failure to register happened before that period. The Policy Manual says applicants over 31 are eligible “even if the applicant knowingly and willfully failed to register.”
Between 26 and 31, USCIS gives you a chance to show you didn’t know you had to register, or that you weren’t required to. You have to show this is more likely true than not. Common honest explanations include arriving in the U.S. after 26, being in nonimmigrant status the whole time, or not knowing the rule applied to green card holders. The officer decides based on your evidence and your answers.
Update: Selective Service stopped issuing status information letters
The N-400 instructions still mention a “status information letter,” but Selective Service’s FAQ now says that as of June 30, 2026, it no longer issues status information letters. It tells men to check their registration with the verification tool. It also says the agency reviewing a benefit, not Selective Service, decides eligibility.
If you’re 26 to 30 and didn’t register, you’ll need to back up your explanation another way. Selective Service suggests including:
- A copy of its who-must-register requirements chart
- Documents that support your situation, such as proof you entered the U.S. after age 26, or I-94 and visa records showing you were a nonimmigrant the whole time
Add your written statement in Part 14 of the N-400. If USCIS asks for something specific in a notice or at the interview, follow those instructions. If you’re unsure, an immigration attorney or accredited representative can help.
What’s changing: automatic registration in December 2026
The National Defense Authorization Act for Fiscal Year 2026 (Pub. L. 119-60, section 535), signed December 18, 2025, rewrites the registration law at 50 U.S.C. 3802. One year after enactment, in December 2026, the Director of Selective Service will automatically register “every male citizen of the United States, and every other male person residing in the United States, between the ages of eighteen and twenty-six.” Lawfully admitted nonimmigrants who keep their status remain excluded. The law lets Selective Service collect information from other federal agencies to do this.
What this means for you:
- Until the new system starts, the old rule applies. If you’re 18 through 25 and not registered, register yourself now. It’s free and online.
- Automatic registration looks forward. It doesn’t change how USCIS looks at past failures to register for men who are now older.
- Selective Service will publish the details, including how people who shouldn’t have been registered can correct a record. Check sss.gov for updates.
Related questions on the N-400 and the civics test
- Items 23 and 24 ask whether you ever left the U.S. to avoid the draft or applied for an exemption from military service. The instructions warn that getting an exemption or discharge from the U.S. armed forces because you were not a citizen may make you ineligible.
- Items 35 to 37 ask whether you’re willing to bear arms, perform noncombatant service, or do civilian work of national importance if the law requires it. These match the oath promises in Q67. If you have a religious objection, see Oath of Allegiance options.
- Q70, What is one way Americans can serve their country?, accepts “Serve in the military” (as well as “Vote,” “Pay taxes,” “Obey the law” and “Run for office”).
Review all of these in the rights and responsibilities section or our post on rights and responsibilities of U.S. citizens.
Quick study tip for Q72
The shortest correct answer is “Required by law.” Say it the same way every time, then practice with a free practice test or in hands-free Listen mode.
Read next
- The “Have You Ever” Questions: N-400 Part 9 Words to Know Before Your Citizenship Interview
- Oath of Allegiance Promises on the 2025 Civics Test
- Naturalization Interview Day: What to Expect
Sources: USCIS, Form N-400 and instructions (edition 01/20/25, Part 9 items 22 to 37) and Policy Manual Vol. 12, Part D, Ch. 7: Attachment to the Constitution. Selective Service System, Who Needs to Register and FAQ (status letters ended June 30, 2026). 50 U.S.C. 3802 as amended by Pub. L. 119-60, sec. 535. Image: Bain News Service, Library of Congress (no known restrictions on publication).
This post summarizes public government information for general education. If you were required to register and didn’t, your situation depends on your facts, so confirm with USCIS or a qualified immigration attorney or accredited representative. It is not legal advice.