Mich. Comp. Laws § 436.1201

Sec. 201. (1) On and after December 15, 1933, it shall be lawful to manufacture for sale, sell, offer for sale, keep for sale, possess, or transport any alcoholic liquor, as defined in this act, including alcoholic liquor used for medicinal, mechanical, chemical, or scientific purposes and wine used for sacramental purposes, subject to the terms, conditions, limitations, and restrictions contained in this act, and only as provided for in this act. (2) Except as otherwise provided in this act, the commission shall have the sole right, power, and duty to control the alcoholic beverage traffic and traffic in other alcoholic liquor within this state, including the manufacture, importation, possession, transportation and sale thereof. (3) A rule, regulation, or order made by the commission shall not unreasonably discriminate against Michigan manufacturers of alcoholic liquor. (4) A peace officer or law enforcement officer of this state or a county, township, city, village, state university, or community college or an inspector of the commission is authorized, and it is the duty of each of them, to enforce the provisions of this act and the rules promulgated by the commission within his or her respective jurisdiction. It is the special duty of an officer described in this section to use his or her utmost efforts to repress and prevent crime and the violation of any of the provisions of this act. An officer described in this section who willfully neglects or refuses to perform the duties imposed upon him or her by this section is guilty of a misdemeanor and upon conviction shall be fined not more than $500.00 or imprisoned in the county jail not more than 90 days, or both.