Mich. Comp. Laws § Article VI § 4: General superintending control over courts; writs; appellate jurisdiction.

Sec. 4.

Except to the extent limited or abrogated by article IV, section 6, or article V, section 2, the supreme court shall have general superintending control over all courts; power to issue, hear and determine prerogative and remedial writs; and appellate jurisdiction as provided by rules of the supreme court. The supreme court shall not have the power to remove a judge.