CFR › Title 25 › Part 1000 › §1000.216525 CFR §1000.2165Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThe non-BIA bureau may request the return of unexpended funds already transferred to a Tribe/Consortium only under the following circumstances:(a)Retrocession;(b)Reassumption;(c)Construction, when there are special legal requirements; or(d)As otherwise provided for in the funding agreement.