It is eye opening to see people so casually speak of American "rulers". Not politicians. Not business leaders. Rulers. That's new.
At the same time, the Trump administration has taken issue with the independence of judiciary branch. When a judge ruled against one of their deportations, the executive branch ignored the ruling and argued that the judicial branch is subordinate. i.e. The king is above the law. So far, there have been no consequences. This is, quite literally, rule of a sort that hasn't been enjoyed by European monarchs since people became serious about enforcing the Magna Carta.
For the moment, Trump is ruling as an absolute monarch. It remains to be seen if there will be a response to assert the supremacy of law and the independence of the judiciary branch, or if the Republican controlled congress will assert it's right to control economic policy. If the law is not enforced, then Americans have a de facto king. Institutions do not defend themselves. People do.