As an European, I don't quite get what people are complaining about, Trump is doing what he said he will do and has a mandate for it. Of course the Democrat university professor will try to rally up people.
He also doesn't have a mandate, he won by relatively thin margins just like all of our recent elections.
If they want to do this and not destroy our democracy, they just need to pass a bill to make the changes they want.
He certainly has no mandate for anything. He only barely won.
And how does one come up with sufficient margins for the president to do any given thing?