Trump right now is operating as an elected dictator. On that basis, the law matters little, because the Republican party has decided it does not.
But from my little understanding, there is an insurrection act that could permit the deployment of the military if the governor asks for it. So, Trump does not enjoy unilateral power to do so. These are the kind of things I suspect we will be dealing with until January when hopefully he is removed from the White House in handcuffs.
We may be hearing from SCOTUS soon on his tax returns. That could be another trigger for even more dangerous behavior.