There are rules against much of what trump is doing.

The rules you and I exist under are strictly policed and enforced. That is what most people think of when they think of rules. Liberals think of Big Mommy. The problem for liberals is that Big Mommy is not coming to save us. In reality our rules are enforced by a monopoly of violence done to us by the state, no such thing for those in the Ruling class in practice. For the Ruling Class the only enforcement is inter-class squabbles, oligarchs shiving oligarchs thru the state.

In as much the rules that Trump is breaking might as well be a completely different concept.