邮寄地址:http://www.uscis.gov/i-765-addresses (c)(26) H-4 Spouse of an H-1B Nonimmigrant File with the USCIS Dallas Lockbox Facility if the receipt number of your H- 1B principal spouse’s most recent Form I-797 Notice of Approval for Form I- 129 begins with EAC or LIN File with the USCIS Phoenix Lockbox Facility if the receipt number of your H -1B principal spouse’s most recent Form I-797 Notice of Approval for Form I -129 begins with SRC or WAC USCIS Dallas Lockbox Facility U.S. Postal Service (USPS): USCIS PO Box 660921 Dallas, TX 75266 For Express Mail and courier deliveries: USCIS Attn: H4 2501 S. State Hwy. 121 Business Suite 400 Lewisville, TX 75067 USCIS Phoenix Lockbox Facility U.S. Postal Service (USPS): USCIS P.O. Box 20400 Phoenix, AZ 85036 For Express mail and courier deliveries: USCIS Attn: H4 1820 E. Skyharbor Circle S Suite 100 Phoenix, AZ 85034