Mich. Comp. Laws § 169.231

Sec. 31. (1) A contribution that is controlled by, or made at the direction of, another person, including a parent organization, subsidiary, division, committee, department, branch, or local unit of a person, shall be reported by the person making the contribution and shall be regarded for purposes of contribution limits as a contribution attributable to both persons. (2) A bundled contribution or a contribution that is delivered as part of a bundled contribution shall be regarded for purposes of contribution limits as both a contribution attributable to the bundling committee that delivered the contribution and a contribution attributable to the individual making the contribution.