Mich. Comp. Laws § 32.225

Sec. 5. The attorney general or such of his assistants as he may designate therefor, shall examine the title to all of said lands, and the deed thereto from the donor to the state, and such deed shall not be accepted without the certificate of the attorney general or his duly authorized assistant, that such title has been examined and that the conveyance is sufficient to vest in the state a good and sufficient title thereto free from liens or incumbrances.