https://www.nafsa.org/professional-resources/browse-by-interest/uscis-and-usps-signature-confirmation-restricted-delivery-service
USCIS and USPS Signature Confirmation Restricted Delivery Service | NAFSA
On April 30, 2018, U.S. Citizenship and Immigration Services (USCIS) began using the U.S. Postal Service's (USPS) Signature Confirmation Restricted Delivery...
usps signature confirmationrestricted deliveryuscisservicenafsa
https://pe.usps.com/text/Imm/immc7_017.htm
754 Restricted Delivery | Postal Explorer
restricted deliverypostalexplorer
https://pe.usps.com/IMM_Archive/NHTML/IMM_Archive_20241104/immc3_016.htm
350 Restricted Delivery | Postal Explorer
restricted deliverypostalexplorer
https://www.nafsa.org/professional-resources/browse-by-interest/uscis-and-usps-signature-confirmation-restricted-delivery-service
USCIS and USPS Signature Confirmation Restricted Delivery Service | NAFSA
On April 30, 2018, U.S. Citizenship and Immigration Services (USCIS) began using the U.S. Postal Service's (USPS) Signature Confirmation Restricted Delivery...
usps signature confirmationrestricted deliveryuscisservicenafsa