An effort to ease Chicago’s affordable housing crisis by permitting coach house dwellings stalled Friday amid opposition from aldermen concerned they would not be able to stop unwanted units from being built in their wards.

“I will not hesitate to reimpose some mitigations if we see (coronavirus) numbers moving upward,” Gov. J.B. Pritzker said Tuesday. “My concern again is all about the health and safety of the people of Illinois.”