I don't disagree with where you're coming from. But to be fair, our system did have separation of powers and rough legal accountability for most of the time it was accruing so much power. The fascists just managed to get enough of the Supreme Council on board to sweep these away under the guises of unitary executive theory and blanket immunity for their new president-king.

So from this perspective it's a matter of a corrupted interpreter, meaning merely adding more legal restrictions won't work. Rather final ultimate authority needs to be distributed amongst the states. The unrest in Minnesota would be solved in a week if the governor could simply use the National Guard to restore law and order without worrying that the out of control federal executive would just take control of them and then have even more foot soldiers to escalate the situation with.