***UPDATE*** USCIS has posted a Request for Information (RFI) for the Contact Center Tier 1 (CCT1) requirement to GSA eBuy under Multiple Award Schedule (MAS) 561422 – Automated Contact Center Solutio... ***UPDATE*** USCIS has posted a Request for Information (RFI) for the Contact Center Tier 1 (CCT1) requirement to GSA eBuy under Multiple Award Schedule (MAS) 561422 – Automated Contact Center Solutions (ACCS). Interested vendors may access the RFI and submit responses via GSA eBuy.