I don't know much about MI, but here in MT we've been in the backcountry quite a few weekends during the CV19 lock-down, including a snowshoe this past weekend. However, it appears Glacier NP will not be opening its backcountry this summer:
https://www.nps.gov/glac/planyourvisit/backcountry.htm"Glacier National Park has modified operations in accordance with the latest guidance from the Centers for Disease Control and Prevention (CDC) and state and local public health authorities. Due to current and anticipated staffing and operational limitations related to the COVID-19 outbreak, combined with the uncertainty of trail and backcountry campground availability, all backcountry camping advance reservations for the 2020 season have been cancelled. This cancellation includes reservations previously processed. All advance reservation application fees will be fully refunded by May 31. The park will not accept or process advance reservations for backcountry camping for the remainder of 2020.
This web page will be updated when the park reopens and we can safely provide backcountry experiences. The park expects to issue overnight backcountry camping permits when conditions allow. Please monitor www.nps.gov/glac and park social media channels for updates on current park conditions."
