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Filing a Form at a USCIS Lockbox Facility? Read our Filing Tips!

Release Date:

Over the past few years, USCIS has been steadily centralizing intake of forms at our lockbox facilities. These facilities allow us to receive your forms more quickly and process payments more efficiently and securely.

This past week, USCIS took another step in this process. Beginning June 4, overseas customers will mail the following forms to the Phoenix Lockbox:  
Mailing forms to a USCIS lockbox is easy. Please be sure to read the following tips:

  • Read the form instructions, ensure your form is neat and legible, and keep all entries within the spaces provided on the form.
  • Use the current form version and mail all pages of the form. The most current forms are always available free of charge at, or can be ordered free of charge by calling USCIS Customer Service at 1-800-375-5283.
  • Use the Adobe fillable forms from our website These forms have helpful features, and their use will ensure the most current form version is being used. 
  • Use black ink if completing forms by hand. Submit all required documentation or evidence as indicated in the form instructions.
  • Sign the form in the correct section (see the form-specific tips below). An original signature is required. If there is no signature or if it is signed in the wrong place, the application will be rejected.
  • Pay the correct fee. Check the form instructions or for the latest fee information. USCIS cannot refund the amount of any overpayments. If the correct fee is not received, the application will be rejected. 
  • Make checks or money orders payable in U.S. dollars, otherwise they will be rejected. Although one check covering multiple applications is acceptable, we recommend submitting separate checks or money orders when multiple applications are filed.
  • Complete the check correctly.
    • The “Pay to the Order of” line should read: U.S. Department of Homeland Security.
    • Ensure the numerical and written check amounts are the same.
    • Ensure the check date is not postdated or stale (over one year old).
  • Submit certified translations for all foreign language documents. The translator must certify that s/he is competent to translate and the translation is accurate. The certification format should include the certifier's name, signature, address, and date of certification. A suggested format is:
Certification by Translator

I [typed name], certify that I am fluent (conversant) in the English and ________ languages, and that the above/attached document is an accurate translation of the document attached entitled ______________________________.
Signature________________________________ Date_________
Typed Name__________________________________________

Do Not:
  • Gray any part of the form or use highlighters or correction fluid. Use of these items prevents USCIS Lockbox scanners from reading the forms, possibly resulting in form rejection. 
  • Submit incomplete forms.
  • Submit unsigned forms or sign forms in the wrong place. 
  • Send items such as a response to a Request for Evidence (RFE) or Notice of Intent to Deny (NOID) to a Lockbox facility; send these documents to the office that requested the information.
Customers may contact with questions regarding applications and petitions that are pending at a USCIS Lockbox facility and those that have been rejected.