Mich. Comp. Laws § 125.971
Clearance of slum or blighted areas; issuance of bonds by cities, maximum, sale.
Any city which has been or is financing the cost of clearance, reconstruction or redevelopment of slum or blighted areas, including land acquisition, demolition or other land preparation work, by tax levies or through tax obligations is authorized to issue bonds or other obligations of the type and character authorized…