Mich. Comp. Laws § 331.624

Sec. 4. The purposes for which Detroit receiving hospital was designed and for which it shall continue to be operated are as follows: (a) To provide an emergency and trauma unit for the residents of the city of Detroit within the present and future capacities of the facility. (b) To provide, together with other institutions operated by the Detroit medical center corporation, the highest quality health services to all persons needing them, regardless of the person's religious, racial, or ethnic identification, or economic status.