USCIS Neighborhood Investigations: What Citizenship Applicants Should Know

Updated November 2, 2026

A citizenship application may now lead USCIS beyond the applicant’s paperwork and interview. Under its renewed use of neighborhood investigations, the agency may seek information from people familiar with an applicant’s residence, employment, business activities, or conduct.

The practical significance is straightforward: information provided on Form N-400 may be checked against accounts from outside the application file. Applicants should understand how these investigations work, when USCIS may waive them, and how supporting evidence can help present an accurate record.

What Changed?

On August 25, 2026, USCIS updated its Policy Manual to formalize guidance on neighborhood investigations and the verification of naturalization eligibility. The update followed an August 22, 2025 memorandum announcing the resumption of a practice that the agency’s predecessor had abandoned by 1991.

The 2026 guidance took effect immediately and applies to naturalization requests pending or filed on or after its publication date. It also preserves USCIS’s discretion to waive an investigation for individual applicants or classes of cases. The decision rests with the Fraud Detection and National Security Directorate in coordination with the Field Operations Directorate. USCIS August 2026 policy alert, reproduced by AILA.

What Is a Neighborhood Investigation?

A neighborhood investigation is a personal investigation used to corroborate information relevant to naturalization.

The underlying regulation describes investigations in the places where an applicant has lived, worked, or conducted business for at least the five years immediately preceding the application. It also authorizes waiver of the neighborhood investigation.

This authority has existed for decades. The recent policy change concerns how USCIS exercises that authority after a long period of generally waiving these inquiries. 8 C.F.R. § 335.1.

Who Might USCIS Contact?

Depending on the circumstances, investigators may speak with neighbors, landlords, supervisors, coworkers, business associates, or others with relevant firsthand knowledge.

The inquiry may address whether the applicant lived or worked at the reported locations and information relevant to character and eligibility. For a business owner, relevant contacts may include people who have interacted with the applicant professionally.

The Policy Manual also recognizes confidentiality obligations and special circumstances, including applicants living in shelters or safe houses. USCIS Policy Manual, Chapter 2, reproduced online.

Will Every Applicant Receive a Visit?

No. USCIS may waive an investigation, and the updated policy does not mean that every citizenship applicant will receive a home or workplace visit.

However, applicants should avoid assuming that a straightforward application will automatically receive a waiver. The decision depends on USCIS’s review of the relevant evidence.

Similarly, an inquiry should not be treated as proof that USCIS has already reached a negative conclusion. Its purpose is to gather information used in deciding eligibility. Boundless’s overview explains that the agency may consider reference letters when deciding whether an investigation is needed, but those letters do not guarantee a waiver. Boundless’s explanation of the policy.

How Character Reference Letters Can Help

USCIS permits applicants to submit testimonial or character reference letters voluntarily. Its policy expresses a preference for letters from U.S. citizens who are not family members and explains that the agency considers them when deciding whether to waive an investigation. USCIS policy alert.

As a matter of preparation, a useful letter should explain the writer’s relationship with the applicant and provide specific observations within the writer’s personal knowledge.

For example, a supervisor can describe the applicant’s reliability and conduct at work. A neighbor can explain how long they have known the applicant and the nature of their interactions. A community organization leader can describe activities in which the applicant actually participated.

Writers should avoid broad claims they cannot substantiate. Someone familiar with an applicant through occasional volunteer work should describe that experience rather than claim knowledge of the applicant’s entire personal history.

What Happens if USCIS Receives Negative Information?

The Policy Manual states that, when USCIS intends to deny an application based on derogatory information obtained through the investigation, it must provide sufficient notice of that information and an opportunity to refute it.

It also explains that the absence of reference letters alone does not justify finding that an applicant lacks good moral character. An investigation may be requested before the oath, including after the naturalization interview. USCIS Policy Manual, Chapter 2, reproduced online.

A request or notice involving adverse information deserves careful review. The response should address the actual concern and provide supporting evidence where available.

How Applicants Can Prepare

Preparation should begin with the accuracy of the application.

Reconcile addresses and employment dates. Review the N-400 alongside records showing where you lived and worked. Identify unexplained gaps or conflicting dates before submitting the application.

Keep supporting records organized. Leases, employment records, business documents, and other contemporaneous evidence may help explain your history if questions arise. Select documents relevant to the issue rather than submitting a large volume of unrelated material.

Choose references thoughtfully. Ask people who know you personally and can describe their own experiences. Review letters for factual accuracy without scripting experiences or opinions the writer does not hold.

Explain discrepancies directly. An incorrect date, unusual living arrangement, or employment gap may require context. A clear explanation supported by records is more useful than an attempt to make a complicated history appear artificially simple.

Review sensitive issues before filing. Applicants with concerns about prior immigration representations, criminal matters, lengthy absences, or conflicting records should obtain an individualized assessment.

The renewed policy gives USCIS another way to examine the factual record. For applicants, the strongest preparation is a truthful, consistent application supported by evidence that can withstand independent verification.

This article provides general information and does not constitute individualized legal advice.