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USCIS published on August 22, 2025, a policy memorandum reactivating an enforcement tool that had been virtually dormant for more than three decades: the so-called neighborhood investigation of naturalization applicants. The measure brings back into everyday citizenship practice a mechanism provided under Immigration and Nationality Act section 335(a) and regulated at 8 CFR 335.1 — one that had been routinely waived since the 1990s. Anyone with a Form N-400 in progress or planning to file one needs to revisit their good moral character evidence strategy.
What Changes in Practice
For decades, screening of citizenship applicants focused on three sources: biometrics, FBI criminal background check, and the naturalization interview. The 2025 memo instructs officers to supplement this trio, on a discretionary, case-by-case basis, with in-person inquiries in the applicant’s neighborhood and workplace. The focus falls on the statutory period relevant to naturalization — generally the five years preceding the N-400 filing, or three years for those naturalizing through marriage to a U.S. citizen under INA 319(a).
The inquiry may include interviews with neighbors, visits to businesses frequented by the applicant, verification of declared addresses, and questions posed to coworkers. The stated goal is to validate three pillars required by the INA: good moral character, continuous residence, and attachment to the principles of the U.S. Constitution.
Who Should Expect a Visit
The memorandum makes clear that investigations will not be applied to all applicants. The decision is discretionary for the officer assigned to the case and is made after an initial review of the file. Cases in which an investigation is more likely to be triggered include inconsistencies between addresses declared over the years, gaps in periods of physical presence, unexplained interruptions in employment history, minor criminal records requiring a rehabilitation assessment, and any indication of document fraud. Applicants with a clean record, stable residence, and a coherent file can still complete the process with only biometrics, an FBI check, and a standard interview.
Legal Basis and Why It’s Back Now
INA 335(a) has always permitted USCIS to conduct a personal investigation — and to waive it when an officer deems it unnecessary — which is precisely the provision the agency used since the 1990s to make in-person inquiries the exception. The 2025 move creates no new authority: it simply narrows the use of the waiver and reopens the practice as an everyday tool.
The shift fits into a broader wave of individualized scrutiny that began in 2025 and continued into 2026: expanded social media review for F, M, and J visa applicants by the State Department, heightened scrutiny of statements classified by USCIS as anti-American in immigration benefit applications, and a general tightening of discretion. Processes that seemed routine just a short time ago now admit additional layers of review.
How to Protect Your N-400
Those who have not yet filed — and those currently in the queue — can get ahead of the process. The most effective approach is to proactively submit evidence of good moral character at filing, rather than waiting for an officer to knock on neighbors’ doors. Useful documents include letters from employers and supervisors, letters from community and religious leaders, proof of involvement in volunteer activities, evidence of full and timely payment of federal and state taxes, proof of child support payments when applicable, and diplomas and certificates demonstrating social integration.
For those with minor criminal records in the relevant period — DUI, misdemeanors, traffic violations — the recommendation is to proactively submit a rehabilitation package: certificates of sentence completion, proof of fine payment, and personal statements detailing the context and remedial steps taken. Concealing this history and hoping the investigation will not uncover it is the worst possible strategy, since omissions on the N-400 constitute evidence of misconduct and directly undermine good moral character.
Addresses, Moves, and Continuous Residence
Neighborhood investigations tend to expose gaps in address declarations. Applicants must list all residential addresses from the past five years on the N-400, as required by Part 4 of the form. Addresses for short stays, informal sublets, and temporary housing during moves are often forgotten — and such omissions can appear as attempts to conceal something. Reconstruct your address history using bank statements, rental receipts, utility bills, and employment contracts.
The continuous residence rule under INA 316(b) treats any absence from the United States of more than six months as a presumption of broken continuous residence. Anyone who traveled during that window must document maintained ties: preserved employment, a tax return filed as a U.S. resident, maintained housing, an active bank account, and documented re-entry on the I-94.
Social Media Vetting
Although the 2025 memo focuses on physical visits, a typical officer investigation will inevitably include a review of the applicant’s public social media accounts. Posts with a hostile tone toward the United States, advocacy of violence, or glorification of terrorist organizations can have devastating consequences. Public accounts deserve the same careful attention as the N-400 itself: what has been posted is legitimate evidence.
Current Fees and Processing Times
The N-400 filing fee is USD 760 (online filing) under the USCIS fee schedule in effect since April 2024, with a reduced fee available for eligible applicants through Form I-912. The national average processing time ranges from 6 to 12 months depending on the field office, but the inclusion of a neighborhood investigation may extend individual cases by several additional weeks. Those approaching the five-year limit should file up to 90 days early as permitted under INA 334(a) — but not before — as premature filings are summarily rejected.
The Key Takeaway
The reactivation of neighborhood investigations does not change the eligibility criteria for U.S. citizenship, but it raises the evidentiary bar. A well-prepared applicant already submits the N-400 with a documented record of good moral character, stable residence, and community integration. An officer who receives a file like that rarely finds it necessary to request an in-person inquiry — and that is precisely the goal of filing thoroughly from day one.
Victoria Harper
Editor-in-Chief
Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.
