One job, and DOING it.
Noem has come out
in advance and stated that she will not comply when Biden forces a national mask mandate. The advance notice is important as potential deterrence.
ONE governor is doing the job of a governor. Some others in Dixie have also been doing the job, but nobody as perfectly as Noem.
Unfortunately ONE isn't enough to stop a tyrant. If the ONE had the leverage of a large state like NY or CA, maybe. If the human governors in Dixie immediately join Noem in a solidly united front, things might change.
Or it might be time to secede again.