Mich. Comp. Laws § 285.32

Sec. 2. The director of markets shall investigate production and marketing farm products and for the exercise of such authority shall have the power to summon witnesses, issue subpoenas, compel attendance of witnesses and the production of evidence. The director of markets shall assist in organization of cooperative and other associations for improving the relations and services among producers, distributors and consumers and afford them such services under adequate rules and regulations as relate to standardizing, grading, packing, handling, storage and sale of products within the state of Michigan not contrary to law, and enforce such rules and regulations by actions or proceedings in any court of competent jurisdiction.