An I-94 is not a visa --- it is essentially an expiration date. An I-94 document contains the designated time you are allowed to stay in the United States on a single trip, and it is placed in your passport when you enter through U.S. customs. It is a nonnegotiable document, and there is nothing anyone can do to alter the expiration date. In this sense, a "renewal" of an I-94 is not possible. However, it is possible extend your stay in the United States by obtaining a replacement I-94 through visa extension or change of status.
Download, print and complete Form I-539, Application to Extend/Change Nonimmigrant Status, from the website of the United States Citizenship and Immigration Services. You must complete and submit the application at least 45 days before your I-94 expires. You can submit Form I-539 electronically through the USCIS website if you prefer.
Gather the supporting documents. Along with a completed Form I-539, you must submit proof of financial support in the United States during the extended stay, a letter stating the reason for the extension request, a copy of a future return ticket, if applicable, and photocopies of your passport information and of Form I-539. You must also submit the filing fee of $290 (as of March 2011) in the form of a check or money order made payable to the U.S. Department of Homeland Security. If filing Form I-539 electronically, send all supporting documents in the mail with the printed e-filing confirmation page. If you are changing status from one nonimmigrant visa to another, you may be required to submit additional documents.
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Send your application and supporting documents to the appropriate USCIS filing center. The filing location depends on your particular circumstances and visa type. Refer to the instruction packet for Form I-539 under "Where to File" to locate the appropriate address. If your extension request is approved, you will be given a new I-94.
- If you are applying for a change of status through a work visa, you must have your employer file Form I-129, Petition for Alien Worker, before applying for any change of status through the USCIS.
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