Mich. Comp. Laws § 450.2713

Sec. 713. (1) A subsidiary corporation that is a constituent corporation in a merger under section 711 shall obtain the approval of its shareholders or members in accordance with the applicable provisions of section 703a. (2) A parent corporation shall obtain approval of its shareholders or members for a merger under section 711 if either of the following applies: (a) Its articles of incorporation require shareholder or member approval of the merger. (b) Pursuant to section 703a, the plan of merger contains a provision that would amend any part of the articles of incorporation of the parent corporation into which a subsidiary corporation is being merged, or a subsidiary corporation is to be the surviving corporation of the merger.