Most N-400 applications are approved, but denials do happen. Knowing the common reasons helps you avoid them.
1. Continuous residence or physical presence problems
Spending too much time outside the U.S. can break the continuous-residence requirement. Track your trips carefully before applying.
2. Good moral character issues
Certain criminal records, lying on the application, or failing to disclose information can lead to denial. Honesty is essential — disclose everything and bring documentation.
3. Failure to pay taxes or child support
Owing back taxes or court-ordered child support can be treated as a moral-character concern. Get on a payment plan and bring proof.
4. Failing the English or civics test
Applicants who fail are usually given a second chance, but missing the re-test appointment can end the case. Practice thoroughly beforehand.
5. Selective Service registration
Most men who lived in the U.S. between ages 18 and 26 must have registered. Failing to do so can raise questions; bring any documentation you have.
6. Incomplete application or missing documents
Errors, blanks, or missing evidence cause delays and denials. Review your N-400 carefully and bring everything on the document checklist.
Practice now: Take the free US citizenship practice test or read every question in the most common civics questions.
This is an independent free study resource and is not affiliated with USCIS or the U.S. government, and is not legal advice. Always confirm current requirements at uscis.gov.
Denials that come from the application itself
- Filing too early. More than 90 days before the end of the 5-year or 3-year period. USCIS denies rather than holds the case.
- Breaks in continuous residence. A single trip of a year or more, or a trip of six months to a year that you could not explain with evidence of U.S. ties.
- Insufficient physical presence. Fewer than 30 months in the United States during the 5 years (18 of 3).
- Wrong filing location. Less than 3 months of residence in the state or district where you filed.
- Loss of the 3-year rule. Separation, divorce, or the death of the citizen spouse before the oath.
Denials based on good moral character
USCIS looks at the statutory period (5 or 3 years) but can consider earlier conduct. Common findings include: a conviction for a crime involving moral turpitude or a controlled substance offense during the period; two or more offenses with combined sentences of five years or more; confinement in jail for 180 days or more; habitual drunkenness; illegal gambling; prostitution; smuggling; polygamy; failure to pay court-ordered child support; failure to file tax returns or pay taxes owed; false testimony under oath to obtain an immigration benefit; unlawful voting or a false claim to U.S. citizenship; and failure to register for Selective Service when required, if the applicant cannot show the failure was not knowing and willful. Murder and aggravated felony convictions (after November 29, 1990) are permanent bars.
Denials for failing the tests
Failing the English test or the civics test at both the first interview and the second interview results in a denial. This is the most common denial that has nothing to do with eligibility, and it is entirely avoidable with preparation. You may file a new application at any time and pay the fee again.
Denials for problems with the underlying green card
An N-400 invites a full review of how you obtained permanent residence. If the officer concludes that the green card was obtained through a fraudulent marriage, a misrepresentation, or an error that made you ineligible at the time, USCIS may deny the N-400 and, in some cases, refer the matter for removal proceedings. This is why applicants with any irregularity in their immigration history should consult an attorney before filing.
Denials for attachment to the Constitution and the oath
Refusing to take the Oath of Allegiance, membership in or support for the Communist Party or a totalitarian party within 10 years, involvement in persecution or terrorism, or desertion from the U.S. armed forces are grounds for denial. Applicants who object to bearing arms for religious reasons can take a modified oath and are not denied for that.
What to do after a denial
The decision letter states the reason. You may request a hearing with a different officer by filing Form N-336 within 30 days, with a fee, and present new evidence or arguments. If the hearing is unsuccessful, you may seek review in federal district court. In many cases, especially test failures and fixable eligibility issues such as a short absence, simply waiting and filing a new N-400 is faster and cheaper than appealing. A denial does not affect your green card unless the officer found a problem with the green card itself.
Last reviewed and expanded by the USCitizenTestPractice Editorial Team in September 2026, based on the USCIS Policy Manual, the official 2025 civics test materials, and current USCIS fee and form instructions. This is an independent study resource, not legal advice.
