Authorization By Resolution - Mich. Comp. Laws Section 129.144

Sec. 4.

(1) A county treasurer shall not enter into a contract with a local unit for deposit of money in an investment pool until authorized to establish an investment pool by a resolution of the county board of commissioners of that participating county.

(2) The treasurer or other chief fiscal officer of a local unit shall not enter into a contract for deposit of money in an investment pool until authorized by a resolution of the governing body of that local unit.