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U.S. Citizenship and Immigration Services Fax Number — Send Documents Securely

Faxing sensitive paperwork to U.S. Citizenship and Immigration Services is fine — over a secure, encrypted channel, which is where most people slip. Headquartered in Washington, District of Columbia, U.S. Citizenship and Immigration Services is a federal immigration agency serving applicants, petitioners, and their attorneys nationwide. This guide covers the secure way to send the document plus how to reach the correct office at the agency.

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U.S. Citizenship and Immigration Services Fax Number

Reach the U.S. Citizenship and Immigration Services office that owns your request and confirm the fax it uses today

Hours: You can send to U.S. Citizenship and Immigration Services any time; routine documents are worked Monday through Friday during business hours.

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What You Can Fax to U.S. Citizenship and Immigration Services

  • A signed authorization if someone is acting on your behalf
  • A completed form addressed to the right office, with a cover sheet naming it
  • The supporting documents the office asked for, in one combined PDF
  • A cover sheet naming the exact office and the reason for the fax
  • A callback number and email so staff can reach you with a question
Tip: Label each page with your identifiers and the reference number U.S. Citizenship and Immigration Services uses to match your record. Address the cover sheet to the exact office you are reaching at U.S. Citizenship and Immigration Services, with a number where staff can reach you. Send everything in one PDF rather than several faxes, confirm the number first, and keep the receipt.

Keeping a fax to U.S. Citizenship and Immigration Services secure

A document you fax to U.S. Citizenship and Immigration Services often carries sensitive personal information, so how you send it matters as much as where. An unsecured line in a shared space cannot promise the confidentiality these records deserve. With Send FAX Mail you fax from your phone or computer over an encrypted connection with a confirmation — plans run $12.99 to $169.99/month — appropriate for documents sent to U.S. Citizenship and Immigration Services.

Petitions, evidence, and inquiries at U.S. Citizenship and Immigration Services

A petition supplement to U.S. Citizenship and Immigration Services goes to the office that received the original filing. The office matches the document to your case before it is worked. Put your name and receipt number on every page.

Where the U.S. Citizenship and Immigration Services fax number actually comes from

The reliable way to fax U.S. Citizenship and Immigration Services is to ask the exact office for its working line. Start on U.S. Citizenship and Immigration Services's official .gov page, then confirm the office and fax by phone. That one confirmation is what keeps the paperwork out of the wrong queue.

Faxing to U.S. Citizenship and Immigration Services — FAQ

A number copied from a search result may be stale; U.S. Citizenship and Immigration Services has the current one. Start on U.S. Citizenship and Immigration Services's official .gov contact page, then confirm the office and fax by phone. That one verification keeps sensitive pages out of the wrong queue.

The receiving office is the one handling your case or program, not a general line. If you are unsure, call U.S. Citizenship and Immigration Services and describe the request to be routed correctly. Sending to the wrong office only adds a routing step and a delay.

Not one central number. As a federal immigration agency, it splits incoming faxes across several offices. Ask for the office you actually need to get the right number. Sending to the wrong office only delays the request.

Include the identifiers U.S. Citizenship and Immigration Services uses to match your record: name and case or file number. State the specific U.S. Citizenship and Immigration Services office the fax is for on the cover sheet. That routing detail is what lets U.S. Citizenship and Immigration Services reconnect the documents if they separate. Check the details once before you send so nothing bounces back.

A response to U.S. Citizenship and Immigration Services goes back to the office that issued the request. Get the destination from the notice, not an old listing. Include all the evidence the request asked for. Name the receiving office on the cover sheet so it is not misrouted. The result is a clean hand-off to the right office at U.S. Citizenship and Immigration Services.

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