Mich. Comp. Laws § 400.1159

Sec. 9. Subject to federal law, the department of social services shall authorize the expenditure of money appropriated for home repairs by the legislature and the federal government. The department of labor shall expend on assisted households at least 40% of the funds appropriated by the legislature for weatherization. The remaining funds appropriated by the legislature for weatherization shall be expended to serve low-income persons in accordance with the weatherization plan administered by the department of labor.