First, he is clearly functioning as the host of The Apprentice, firing people at will. He has decimated his cabinet and created both a vacuous Department of State and cleaned out the federal judiciary so that he can feel free to appoint lawyers only of his choosing.
Secondly, he has been trying to behave as a king, appointing members of his family to high Cabinet positions initially and, recently, declaring Jerusalem as the capital of Israel. He believes his fiat can change the world. His executive orders which he has promulgated since day one of his presidency are further evidence of his regal aspirations.