25 CFR § 162.316
How will BIA enforce removal requirements in a residential lease?
February 24, 2021
We may take appropriate enforcement action to ensure removal of the permanent improvements and restoration of the premises at the lessee's expense:
(a) In consultation with the tribe for tribal land or, where feasible, with Indian landowners for individually owned Indian land; and
(b) Before or after expiration, termination, or cancellation of the lease.