Michigan Compiled Laws, Chapter 700. Estates and Protected Individuals Code § 700.5202a

Sec. 5202a. (1) If a guardian has not been appointed in this state and a petition for the appointment of a guardian is not pending in this state, a guardian appointed, qualified, and serving in good standing in another state may be appointed immediately as temporary guardian in this state on filing with a court in this state an application for appointment, an authenticated copy of the guardian's appointment in the other state, and an acceptance of appointment. Letters of guardianship for the temporary guardian expire 28 days after the date of appointment.

(2) Within 14 days after appointment as temporary guardian under subsection (1), the guardian shall give notice to all interested persons of his or her appointment and the right to object to the appointment. On filing proof of service of the notice with the court, the temporary guardian shall be appointed full guardian and the court shall issue letters of guardianship accordingly.

(3) If an objection is filed to a guardianship under this section, the guardianship continues unless a court in this state enters an order removing the guardian.