Mich. Comp. Laws § 125.1632a
The members of the board of directors of any corporation organized pursuant to this act or any person executing any revenue bond or revenue note on behalf of a corporation shall not be liable personally on the revenue bond or revenue note, or be subject to any personal liability or accountability by reason of the issuance of the revenue bond or revenue note, by reason of acquisition, construction, ownership, or operation of a project, or by reason of any other action taken or omitted by the board of directors. By resolution the board of directors of any corporation organized pursuant to this act may provide for the purchase of insurance indemnifying the members of the board from and against any and all personal liability or accountability described in this section or any loss or expense related thereto.
MCL 125.1632a