Western Michigan University's Travel web page describes restrictions the University is putting in place. The CDC travel notice page is the authoritative source for notices.
Travelers Returning to campus
Faculty, staff and students returning from business or pleasure trips to areas the CDC has identified as being at risk for COVID-19 transmission should follow the guidance given by health professionals upon their return to the U.S. This includes study abroad program returnees as well as international students traveling to WMU.
Travelers returning from high-risk areas noted above should self-monitor to prevent exposing other WMU students, faculty or staff to the virus that causes COVID-19.
Returning travelers should disclose travel history to their department or contacts at WMU to facilitate communication after their return to the U.S. by emailing info@wmich.edu.