I would say both Obama and Trump have confused our system of government with a Monarchy....maybe authoritarianism has lead to success in the private sector where the goal is pretty straightforward (gather all the chips on the table)
but Im not so sure it a successful strategy for a President who will have 2 other co equal branches of Government to contend with.
How is trump an authoritarian? You mean his desire to get the illegals out of the country?