Mich. Comp. Laws § 445.870
The attorney general, or with his consent a prosecuting attorney, may accept an assurance of discontinuance of any act or practice deemed in violation of this act from any person engaging in, or who has engaged in, such act or practice. Any assurance shall be in writing and filed with and subject to the approval of the circuit court of the county in which the alleged violator resides or has his principal place of business. Failure to perform the terms of any assurance constitutes prima facie proof of a violation of this act for the purpose of securing any injunction as provided in section 19 and for the purpose of section 18. After commencement of any action by a prosecuting attorney, the attorney general may not accept an assurance of discontinuance without the consent of the prosecuting attorney.
MCL 445.870