Mich. Comp. Laws § 600.4319: Habeas corpus; custody of child.

Sec. 4319.

If the action for habeas corpus is brought by a parent, foster-parent, or other relative of the child, to obtain custody of a child under the age of 16 years from a parent, foster-parent, or other relative of the child, issuance of the writ of habeas corpus is not mandatory.