An unpublished report by the White House Coronavirus Task Force dated Tuesday suggests that at least 18 hard-hit states — including California, Florida, Georgia, Oklahoma and Texas — enact stricter measures such as mask requirements and increased testing. The report was first published by the Center for Public Integrity.

Georgia Gov. Brian Kemp (R) on Thursday sued to stop Atlanta from enforcing some of its coronavirus-related rules, including its recent mandate to wear a face covering in public.

The lawsuit alleges that Mayor Keisha Lance Bottoms (D) lacked the authority to implement a mask requirement and that she must obey Kemp’s executive orders, including one signed Wednesday night that explicitly bans municipalities from enacting their own mask ordinances.

Here are some significant developments: