In Summer 2024, Archaeology Southwest (ASW), a Tucson-based nonprofit located on the homelands of the Tohono O’odham and Pascua Yaqui Tribe, entered into a Cooperative Ecosystem Studies Unit (CESU) Agreement with the Bureau of Indian Affairs (BIA) to support the agency’s work under the Native American Graves Protection and Repatriation Act (NAGPRA). Building on over eight years of successful collaboration on ARPA-related investigations, this new agreement establishes a focused program to help the BIA gain clarity on collections held across the U.S. and assess their progress through the NAGPRA process. This presentation will introduce the NAGPRA agreement and the goals of the program, share accomplishments to date, and outline plans for the next four years. Central to this work is the BIA’s commitment to respectful Tribal consultation and the return of Ancestors and their belongings. Together, ASW and the BIA are engaging with Tribes, Pueblos, and Nations across the country to support this critical effort.