All I have to say is, it is an amazing thing that the drafters of the constitution really hated monarchy. They dispersed power and put in multiple means of stopping any single person running or ruining the country. It's actually amazing foresight. But if you think of the goal "no monarchs" they did everything they could to prevent one.
Legislative and executive power dispersed amongst the presidency, House, Senate. Judiciary separate. Then states have power as well (if 2/3 states call for constitutional convention, it can be amended). They basically divided power as much as possible.
That's why lawmaking is so frustrating, but no matter how much damage Trump does, he will not take down the republic. Pretty amazing foresight from people who had never seen a functioning democracy.