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U.S. Postal Service
Express Mail and Courier Service deliveries
The U.S. Postal Service (USPS) will immediately forward mail from the Lewisville Post Office to the new post office in Dallas until December 31, 2009. After that date, the USPS will forward any applications sent to the Lewisville Post Office box through normal channels which will likely delay receipt at the USCIS Dallas Lockbox Facility. Applicants filing Forms I-600 and I-600A through Express mail and courier services should note changes to the Lewisville street address.
U.S. citizens outside the United States may continue to file the Form I-600 at a U.S. Embassy, U.S. Consulate or USCIS office abroad that has jurisdiction. In order to file a Form I-600 petition abroad, the petitioner must have an approved Form I-600A and be physically present in the country where they are filing.
Applicants filing at the USCIS Dallas Lockbox facility may elect to receive an email and/or text message notifying you that your application has been accepted. You must complete an E-Notification of Application/Petition Acceptance (Form G-1145), and attach it to the first page of your application.
For more information on USCIS programs, call the National Customer Service Center at 1-800-375-5283.