Citizenship applicant listening carefully to a USCIS officer during an interview

Do not give an answer you know is false, guess at a fact, or deliberately leave out information. The USCIS Policy Manual says the officer places you under oath at the start of the interview, and you signed your written N-400 under penalty of perjury. Give accurate answers even if your English is imperfect.

Why False Answers Matter More Than Mistakes

The Policy Manual separates honest mistakes from false testimony. Its chapter on good moral character bars says an applicant who gives false testimony to obtain an immigration benefit cannot establish good moral character. Under that chapter, false testimony has three parts:

  • It is spoken, not only written on a form
  • You make it under oath
  • You make it on purpose to obtain an immigration benefit, such as citizenship

The bar applies even if the true information would not have made you ineligible. The Policy Manual says false testimony most often involves hiding a criminal record. It can also involve your admission, trips abroad, residence, marital status, employment, memberships, or tax filing.

Written answers carry their own risk. The N-400 instructions say USCIS will deny the application if you knowingly and willfully falsify or conceal a material fact or submit a false document.

Mistake 1: Guessing Instead of Clarifying

Pause if you are unsure. Guessing can conflict with your application or another answer.

Safer approach:

  • Say, "I am not sure. Let me think for a moment."
  • Ask the officer to repeat or rephrase the question
  • Give your most accurate answer, not your fastest one

Mistake 2: Hiding a Problem Because You Are Afraid

Some people avoid mentioning old citations, tax problems, or trips because they worry the information will hurt their case. The officer compares your answers with your file, which can include criminal records and reports from other agencies. Leaving out a problem the officer can see in that file creates a credibility issue on top of the original problem.

Safer approach:

  • Answer directly and truthfully
  • Give brief context without unrelated detail
  • Bring certified records if you know an issue may come up

Mistake 3: Leaving Out Sealed or Expunged Records

Part 9 of the Form N-400 tells you to list each crime or offense even if the record was sealed, expunged, or otherwise cleared. It also says to disclose it even if a judge, police officer, or lawyer told you it is no longer on your record. Saying "no" because someone told you the record went away is one of the easiest mistakes to avoid.

Mistake 4: Reading "Ever" as "Recently"

Many Part 9 questions ask whether you have "EVER" done something. The N-400 says those questions cover anything you did anywhere in the world, at any time, unless the question says otherwise. Two of them ask directly whether you have EVER given false or misleading information to U.S. government officials, or lied to gain entry or an immigration benefit. Answer each question for your whole life, not just the last 5 years. Our guide to N-400 yes-or-no questions explains the time period in each group.

Mistake 5: Saying Something That Conflicts With Your N-400

The officer compares your spoken answers with your filed application and the evidence, then asks follow-up questions to resolve conflicts. If your dates, addresses, trips, or jobs suddenly change, the officer needs to sort out which version is true.

Safer approach:

  • Review your N-400 before the interview
  • Bring a copy and mark anything you need to update
  • Tell the officer about the change at the start, instead of waiting to be asked

Our guide on correcting your N-400 at the interview explains what to bring for each kind of change.

Mistake 6: Letting Someone Else Answer for You

The questions are for you. The Policy Manual says a lawyer or accredited representative may advise you on the law but should not answer questions the officer directs to you. If you qualify for an interpreter, the interpreter must translate word for word and may not add opinions or answers.

What to Say Instead: A Simple Interview Script

If you are unsure what to say, keep it simple:

  1. "Could you please repeat that question?"
  2. "I need a moment to think."
  3. "I need to correct one detail on my N-400."

Use the first phrase when you need repetition, the second when you need time to recall a fact, and the third to correct your application.

Review Your Application Before Interview Day

USCIS asks questions about your application and gives the English and civics tests during the naturalization examination. Review your N-400, answer truthfully, and ask for clarification when you need it. See the USCIS interview and test page for the official overview.

Official Sources

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Jennifer Brisbane, Ph.D.

About the Author

Dr. Jennifer Brisbane is a researcher and engineer focused on helping applicants navigate the U.S. citizenship and naturalization process. She previously served as an adjunct assistant professor at the City University of New York, where she taught courses and conducted research related to immigration and public policy.

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