Mich. Comp. Laws § 400.59b
Counties receiving notices shall acknowledge their receipt and within 60 calendar days thereafter shall make an investigation of the case and acknowledge that settlement lies in Michigan and domicile within the county or present to the county department granting relief detailed evidence, together with and supporting a denial of the settlement or domicile or both. If the county department receiving a denial is not satisfied with the evidence supporting it, appeal may be made to the director of the state department. If the notice of denial is not given to the county department granting relief within 60 calendar days after the county of probable domicile receives notice, the county department granting relief, irrespective of any other provisions of this act, shall be reimbursed by the county receiving the notice for all relief granted the applicant prior to the date the notice of denial is given. In the case of 2 or more counties having received notices under section 59a and none having acknowledged settlement and domicile, the failure to acknowledge may be treated as a denial for the purpose of an appeal to the director.
MCL 400.59b