Mich. Comp. Laws § 324.50163: Pledge and lien of pledge valid and binding; recordation not required.

Sec. 50163.

A pledge made by a district shall be valid and binding from the time the pledge is made. The money or property pledged and thereafter received by a district is immediately subject to the lien of the pledge without physical delivery or a further act. The lien of a pledge is valid and binding as against all parties having claims of any kind in tort, contract, or otherwise against a district, irrespective of whether the parties have notice of the claim. Neither the resolution nor any other instrument by which a pledge is created need be recorded.