Which one in below for sending I-130 and I-485 for my parents?
USCIS Chicago Lockbox
For U.S. Postal Service (USPS) deliveries:
USCIS
PO Box 805887
Chicago, IL 60680-4120
For Express mail and courier deliveries:
USCIS
Attn: FBAS
131 South Dearborn - 3rd Floor
Chicago, IL 60603-5517
What's this for?
Where applicable, you must include a copy of the Form I-797C Notice of Approval, showing that your Form I-130 or Form I-360 was accepted or approved.