Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.50518

Sec. 50518. The state pledges to and agrees with the holders of bonds or notes issued under this part that the state shall not limit or restrict the rights vested in the authority by this part to fulfill the terms of an agreement made with the holders of authority bonds or notes, or in any way impair the rights or remedies of the holders of the bonds or notes of the authority until the bonds and notes, together with interest on the bonds or notes and interest on any unpaid installments of interest, and all costs and expenses in connection with an action or proceedings by or on behalf of those holders are fully met, paid, and discharged.