Good Moral Character for Naturalization: What USCIS Really Examines

May 7, 2026

(Estimated Reading Time: 7 Minutes)

Of all the things that delay or derail a naturalization case, “good moral character” is the requirement clients understand the least. It is not about whether someone is a good person. It is a defined legal standard with categories USCIS reviews case by case, and it can be the reason the same client who looks ready on paper gets a Notice of Intent to Deny months after the interview.

Below is how the Good Moral Character (GMC) requirement actually works, what USCIS examines during the statutory period, and the issues that come up most often when we prepare an N-400 at Passage Immigration Law.

What the GMC requirement is and is not

To naturalize under INA § 316, an applicant must show good moral character for the relevant statutory period — typically the five years before filing for most green card holders, or three years for spouses of U.S. citizens. The clock keeps running through the application; if something happens between filing and the oath ceremony, USCIS can revisit the determination.

USCIS evaluates GMC against the statutory bars in the Immigration and Nationality Act and the discretionary factors described in the USCIS Policy Manual. Some conduct is a permanent bar — meaning it disqualifies the applicant forever. Other conduct is a conditional bar that disqualifies during the statutory period only. Other conduct is reviewed as a discretionary factor, where USCIS weighs positive equities against the concern.

The categories USCIS reviews

1. Criminal history

Any arrest, charge, citation, conviction, or admission of a crime is reviewable, even if it never resulted in a conviction or never made it onto a public record. The N-400 itself asks the applicant to disclose every arrest, citation, detention, charge, and conviction, regardless of whether the records were sealed, expunged, or dismissed. Failing to disclose is far worse than disclosing a minor incident.

Specific concerns include:

Crimes involving moral turpitude (CIMTs)
Aggravated felonies — a permanent GMC bar
Two or more offenses with combined sentences of five years or more
Controlled substance offenses, with a narrow exception for a single offense of simple possession of 30 grams or less of marijuana
Multiple DUIs, even when no jail time was imposed
Domestic violence convictions or protective orders

Even a single conviction can be a permanent bar depending on the underlying offense. Pleading guilty to a “minor” charge under state law can have outsized immigration consequences. We always pull court records before filing an N-400 if there is any criminal history at all, because the certified disposition often shows the case differently than the client remembers.

2. Tax compliance

USCIS officers regularly ask applicants whether they have filed taxes for every year they were required to. They will often ask to see transcripts. Unfiled federal returns, unpaid back taxes without a payment plan, and claiming “non-resident” tax status while applying for citizenship are all GMC concerns.

If you have a tax issue, the right move is to fix it before filing — either by filing the missing returns or by setting up a payment plan with the IRS. Walking into the interview with a current IRS payment agreement and proof of timely payments is much stronger than walking in with unfiled returns and an apology.

3. Failure to register for Selective Service

Male applicants who lived in the United States as lawful permanent residents between the ages of 18 and 26 generally must have registered for Selective Service. Failure to register during the statutory period can be a GMC bar; failure outside the statutory period requires an explanation. Older applicants who never registered can usually demonstrate they did not “knowingly and willfully” fail to register, especially if they did not understand the requirement applied to permanent residents.

4. Child support and family obligations

Past-due child support — particularly arrears that the applicant has refused to pay — is a discretionary GMC concern. A current payment plan and proof of payments resolves most of these concerns. Failure to support dependents in the United States is also a statutory bar.

5. False statements and immigration fraud

Lying to USCIS to obtain an immigration benefit — including the green card itself — is a separate ground of inadmissibility and a GMC bar. The N-400 asks specifically whether the applicant has ever lied to a U.S. official to obtain an immigration benefit. Inconsistent answers between the green card application and the N-400 frequently surface here.

6. Voting and registering to vote

Voting in a federal election as a non-citizen, or registering to vote and indicating U.S. citizenship on a state form, is an automatic GMC bar and can also be a removal ground. This includes a “yes” check on a voter registration question at the DMV during a license renewal — even if the applicant never actually voted.

7. Conditional and discretionary issues

Beyond the statutory bars, USCIS weighs general factors: stability of employment, family ties, community involvement, length of lawful permanent residence, and the absence of disqualifying conduct. Strong positive equities can sometimes overcome a discretionary concern, but they cannot overcome a statutory bar.

Common scenarios that need extra care

The single DUI

A single DUI does not automatically bar GMC, but two or more during the statutory period generally do. We look at completion of probation, fines paid, alcohol education, and the time since the offense. Documentation matters.

The old marijuana possession

One conviction for simple possession of 30 grams or less of marijuana has a narrow exception under the GMC rules, but more than one, or possession of any other controlled substance, is a GMC bar within the statutory period and a permanent bar under inadmissibility law. State legalization does not change the federal analysis.

The tax issue from years ago

Unfiled returns from before the statutory period are still a problem if they remain unfiled at the time of the N-400 interview. The fix is to file the returns and bring proof.

The arrest that “didn’t really happen”

Clients sometimes say an arrest “didn’t really happen” because the case was dismissed, sealed, expunged, deferred, or never charged. The N-400 still requires disclosure. Officers can see the underlying records.

Free download: Good Moral Character Checklist

Free Attorney-Prepared Checklist

Good Moral Character Checklist for Naturalization

Our free checklist walks through the GMC categories USCIS reviews, the documents that help, and the red flags to address before you file Form N-400. Useful for clients with any criminal, tax, or financial concern in their record.

Download the GMC Checklist

How we prepare GMC-sensitive N-400 cases

Every N-400 case we file goes through a GMC review before we put it together. We pull court records, IRS transcripts, and state agency records when relevant. We document positive equities — community involvement, stable employment, family in the United States, hardship to family if denied. Where there is a real concern, we address it directly in the cover letter and the supporting evidence rather than hoping the officer will not notice.

The applicants who run into trouble are usually the ones who filed alone or with someone who did not pull the underlying records. The case that looked clean on the form turns out not to be clean once the certified disposition arrives.