How to send documents to USCIS

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It is an overwhelming task to fill applications or petitions with U.S. citizenship and immigration services. USCIS is a massive government organization and they are heavily burdened. Hence, USCIS files over 6 million forms a year alone. Even if you are satisfied with your process of USCIS form filing, still these agencies lost parts of your application package. If you will avoid common mistakes and oversights that it will save you a lot of time and anxiety. Hence, if you are not sure about the application process with USCIS. Don’t worry, this article is for you. This article will let you know all the processes on how to send documents to USCIS. However, it also covers all the preventive measures so that you don’t have to call them back.

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USCIS Form Filing Tips

It is very important to read and follow the form’s instructions carefully. Hence, it will help you avoid delays and rejection of applications. Every form of USCIS that you are filing and why you are filing it has its own requirements. Eligibility requirements, form fees, required documents, fee waiver eligibility, and mailing address vary according to the type of form. However, these tips will ensure that USICS accepts your request package for processing. Check this out if you want help with USCIS form filing and translation.

Complete Your Form Accurately

  • Use the most current version of the forms. USCIS updates its forms on the websites. Hence, you can download the forms from their website and fill them electronically. Provide all the necessary information and complete the entire form
  • Don’t forget to sign the USCIS form. However,  unsigned forms are mostly returned or rejected.
  • Use blank ink if you are manually filling the form. Provide entries in the answer blanks and within the space provided. Hence, avoid the use of correctors or highlighters on the USCIS form.
  • Do not submit the form with an incorrect or incomplete filing fee. Attach the fee waiver to the upper left corner of the application or petition.
  • Provide your name, A-number, and date of birth exactly the same way on each form, if you are filing multiple forms.
  • Provide all requested evidence and documentation.
  • You will receive a USCIS mail regarding your location, date, and time of appointment. Don’t forget to take all the relevant documents and receipt notices to your appointment.

Assemble your applications, petition, or request

USCIS recommends you assemble your package in the following order:

1. Place your payments on the top

  • Form G-1450, authorization for credit card transaction or Check or money order
  • If applicable then place Form G-1145
  • After that place Form G-28, only if applicable
  • The form that you have filed
  • Requested documentation

2. Supporting documentation

  • If any of the supporting document is in the Foreign language, make sure that it is accompanied with English translation. Hence, the translation must be certified translation from a professional translator.
  • Do not send your originals. Only submit the photocopies unless USCIS requests your original documents. Hence, there are chances of original documents getting lost and become part of the record. It may take weeks or months of delays to return your original documents.
  • Make sure to mention your name and A-number, if you have any attachments.

3. Marks the envelopes

  • Mark the nature of submission on the envelope or cover letter. For example, Response to request for additional submission, original submission, etc.
  • Mark the form number such as Form I-485, Form I-360, etc. on the cover letter and the envelope.
  • Make sure to separate the cases by fasteners or rubber bands, if you are sending more than one case.

4. Resubmission in response to a request for evidence

Make sure to place the notice requesting additional evidence/information on the top of the packet that you are resubmitting in response to the request for evidence. Hence, you can use provided mailing envelope.

5. Submission of evidence in support of previously filed appeal or emotion

If this is the case, make sure to place the cover letter with “Brief for (Appeal/Motion)” on top of the packet.

While preparing your packet, remember the following tips

  • Submit single-sided copies of required documentation.
  • Avoid submitting oversized documentations. Hence, it is unnecessary.
  • USCIS rejects binders or folders that are not easy to disassemble.
  • Use fasteners or heavy clips instead of using heavy-duty staples. Hence, USCIS appreciates the two-hole punching the top of the material.

How to pay a USCIS filing fee

  • It is necessary to include the correct fee along with the completed document. If you are living inside the united states, USCIS accepts the filing fee depending on the form via:
    • Personal check
    • Cashier’s check
    • Money order

    Hence, USCIS does not accept all forms of payments abroad. So, if you are living outside the united states go to the official website and check if you can file your form at the international office or not. Moreover, you can contact the U.S. Embassy or Consulate to get information about how to pay a filing fee.

    Be sure that you have sufficient funds n your account if you are paying your fee using a personal check. Hence, it will help you to cover the payment. USCIS will turn your check over to Debt Management for collection. If you make two unsuccessful attempts to achieve payment from your bank. Hence, this will result in major delays in the processing of your immigration form.

where to mail form n 400
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Why would a Request for evidence be necessary?

If USCIS needs additional information to complete the processing of your form, then they will issue a request for evidence. Here are some common reasons:

  • You may have not submitted the evidence that you have maintained legal status or you have legally entered the country.
  • You have failed to provide the evidence that verifies your qualification for the immigration benefit.
  • Incomplete submission USCIS form I-693 medical exam or supplement. Hence, you have forgotten to submit the form with an application to adjust the status to permanent resident.
  • Failed submission of certified translation of your foreign language birth or marriage certificate.

Avoid getting Request for evidence

  • Carefully and properly prepare your immigration form. Hence, well organize all your documentation before submission. To avoid Getting RFE to provide, complete, consistent and clear documents. Submit all the initial evidence at the time of filing.

Mail your application, petition, or request

  • You can mail your forms through the website where the mailing address is listed. Hence, you can also submit your documents through USPS, UPS, DHL, or FedEx.
  • USCIS rejects your request as improperly filed if you send it to the wrong filing address. Hence, they may return it to re-file.
  • You can call the contact center, or download the forms from the form pages and get them printed. You can also get the forms by mail.

Where to mail form n 400?

You can send you n 400 mail via regular mail or express mail.

Regular mail

You can send your n 400 to USCIS, P.O. Box 21251 and Phoenix, AZ 85036. Hence, you can send to these addresses If you are sending your N-400 via US Post Office (USPS).

Express mail

You can send your N-400 to USCIS, Attn: N-400, 1820 E. Skyharbor Circle S, Suite 100, Phoenix, AZ 85034. You can mail to these addresses if you are using via courier companies and Express mail.


We ensure you that these tips and guidelines will help you to send your documents to the USCIS. Hence, these tips are not only for individual applicant packages but also apply for family packages.

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