Mich. Comp. Laws § 119.10
Every amendment to a district charter before its submission to the electors and every charter before final adjournment of the commission, shall be transmitted to the governor of the state. If he shall approve it, he shall sign it; if not, he shall return the charter to the commission and the amendment to the legislative body of the district with his objection thereto, which shall be spread at large on the journal of the body receiving them, and if it be an amendment proposed by the legislative body, such body shall reconsider it and if 2/3 of the members agree to pass it, it shall be submitted to the electors. If it be an amendment proposed by an initiatory petition it shall be submitted to the electors notwithstanding such objections.
MCL 119.10