Whitmer: Casinos to temporarily close as Michigan coronavirus cases climb to 53 Chad Livengood and Kurt Nagl, Crain's Detroit Business · March 15, 2020 at 11:21 pm Gov. Gretchen Whitmer said Sunday evening that the Michigan Gaming Control Board will temporarily shut down state-regulated casinos while the number of confirmed coronavirus cases climbed to 53 in the state. “We know that’s where there are masses of people who congregate,” Whitmer said of Detroit’s three casinos. Additional details about when MGM Grand Detroit, MotorCity Casino and Greektown Casino would have to close were not immediately clear. A spokeswoman for the Michigan Gaming Control Board had no immediate details on when the shutdown would begin.