United States · citizenship
USCIS Adds Naturalization Neighborhood Investigations to Its Policy Manual
USCIS incorporated personal, or neighborhood, investigations into its Naturalization Policy Manual on August 25, 2026. The update explains what officers may examine, how far the inquiry can look back, and why the process will not apply identically to every Form N-400 case.
Published . Updated .
Reported and checked by the QueueCheck news desk. Last checked August 27, 2026. How we verify information
At a glance
The August 25, 2026 update did not create a new citizenship requirement or announce that every applicant will receive a home visit. It moved USCIS's existing case-by-case neighborhood-investigation policy into the centralized Naturalization Policy Manual. Officers may use an investigation to check information connected to residence, employment and naturalization eligibility, or may waive the investigation when USCIS considers a waiver appropriate in the particular case.
Who the Policy Manual update affects
People preparing Form N-400, people with a naturalization application already pending, and applicants whose residence, employment or other eligibility history may require additional verification.
What USCIS added on August 25, 2026
- USCIS added the guidance to Volume 12, Part B of the Policy Manual on August 25, 2026. The agency calls the process a personal investigation or neighborhood investigation.
- The policy itself traces to an August 22, 2025 memorandum that resumed case-by-case use of investigations under section 335(a) of the Immigration and Nationality Act. The 2026 action places that policy in the manual officers and applicants use as the central guidance source.
- USCIS says an investigation may cover the vicinity of an applicant's residence and employment. Its purpose is to corroborate information relevant to naturalization eligibility rather than to replace the Form N-400 examination.
- The stated period covers at least the five years immediately before the naturalization application was filed. A longer or different statutory period can matter in some naturalization categories, so the controlling requirements still depend on the applicant's route.
- USCIS may waive the neighborhood investigation when it determines, in its discretion, that a waiver is appropriate in the particular case. The update therefore does not establish a universal visit, interview with neighbors or employer contact for every applicant.
- The update changes how USCIS documents the investigation and examination process. It does not announce a new Form N-400 edition, filing fee, eligibility category or published processing-time target.
The investigation rules in exact terms
Official update date: August 25, 2026. USCIS displays a date, but no publication time; QueueCheck therefore reports the date only.
Form involved: Form N-400, Application for Naturalization.
Legal authority identified by USCIS: Immigration and Nationality Act section 335(a).
Policy Manual location: Volume 12, Citizenship and Naturalization, Part B, Naturalization Examination, Chapters 2 and 3.
Minimum stated lookback: at least five years immediately before the Form N-400 filing date.
Decision structure: USCIS determines case by case whether an investigation is conducted or waived.
Where you are in the N-400 process
I am preparing to file Form N-400
The update does not add a new filing form. Check that the residence and employment history you submit is complete and consistent with the records you rely on, and follow the current Form N-400 instructions.
My Form N-400 is already pending
The existence of this policy does not show that USCIS has selected your case for an investigation. Continue to follow your case status and respond only to official notices or verified agency contact.
A neighbor or employer was contacted
A contact can be consistent with the investigation authority described in the Policy Manual, but this page cannot authenticate a caller or explain what an individual case requires. Verify the person's identity and preserve any written USCIS communication.
Neighborhood-investigation questions, answered
Will USCIS visit every naturalization applicant's neighborhood?
No. USCIS says it decides case by case whether to conduct an investigation or waive it.
How far back can the investigation look?
USCIS says a personal investigation covers at least the five years immediately before the Form N-400 filing date.
Did USCIS create a new citizenship requirement on August 25, 2026?
No. The update incorporates investigation and examination guidance into the Policy Manual; it does not create a new statutory naturalization requirement.
Does this mean my N-400 will take longer?
Not necessarily. USCIS has not said every case will be investigated and has not published a processing-time effect for the policy.
Should I send letters from neighbors or employers now?
The August 25 update is not an individual request for evidence. Follow the current N-400 instructions and any notice USCIS sends in your own case.
What this can change in a naturalization case
For applicants, the practical consequence is the possibility of an additional verification step involving information about where they lived or worked. USCIS has not said that this step will appear in every case.
A neighborhood investigation can sit alongside the normal record review, security checks and naturalization examination. The update does not turn a third party's statement into a separate citizenship test; USCIS still decides the Form N-400 under the existing eligibility requirements.
The official guidance gives no average duration for an investigation and no estimate of how much time it could add. A pending case cannot be classified as delayed simply because this policy exists.
The distinction between the 2025 memorandum and the 2026 Policy Manual update matters: personal investigations had already resumed case by case. August 25, 2026 is the date USCIS incorporated that policy into the manual.
What N-400 applicants should check now
- Review the address and employment history already provided on Form N-400 and keep records that support those entries. If something is inaccurate, use the applicable USCIS correction or update process rather than assuming the interview will fix it automatically.
- Keep the mailing address and online-account contact details current so that a request for evidence, interview notice or other USCIS communication is not missed.
- Read any USCIS notice for the exact information requested and its response deadline. The Policy Manual update alone is not a request to send testimonial letters or additional documents.
- If a person contacts you or someone in your community claiming to act for immigration authorities, verify the person's identity and the agency involved. A general news article cannot confirm whether an individual contact is genuine.
- Use the current N-400 service page to check the official processing-time tool and compare the correct field office and stage. USCIS has not published a separate processing-time measure for neighborhood investigations.
The 2025 memorandum and the 2026 manual update
Section 335(a) has long authorized an examination and investigation before naturalization. USCIS generally waived neighborhood investigations for decades before issuing Policy Memorandum PM-602-0189 on August 22, 2025.
The 2025 memorandum resumed personal investigations and described their possible reach around an applicant's residence and employment. The August 25, 2026 Policy Manual update consolidates that approach in the manual rather than announcing a second, separate program.
Naturalization eligibility still turns on the statutory requirements that apply to the applicant, including matters such as residence and good moral character. The investigation is one method USCIS may use to verify the record.
QueueCheck found no USCIS figure for how many applicants have received these investigations, which field offices are using them most often, or how long they take. Those questions should remain unanswered until the agency publishes data.
What USCIS has not published
- USCIS has not published the share or number of Form N-400 cases selected for neighborhood investigation.
- The agency has not published a separate national processing-time effect for this policy.
- The manual preserves case-by-case discretion, so this update cannot establish whether a particular applicant will be investigated or receive a waiver.
- The official alert shows August 25, 2026 as its date but does not display an exact publication time.
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Official citation: USCIS Policy Manual chapters and policy memorandum checked
Published August 25, 2026. Original source: USCIS Policy Manual, Volume 12, Part B, Chapter 2: Background Investigation and Security Checks.