地址確定:同時遞I-130, I-485, I-131, 及其他相關文件,是不是到
U.S. Citizenship and Immigration Services
P.O. Box 805887
Chicago, IL 60680-4107
For couriers/express deliveries:
USCIS
Attn: FBAS
131 South Dearborn - 3rd Floor
Chicago, IL 60603-5517
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