Since when does an EMPLOYEE think he is the boss? A prez is HIRED to do a job for we the people. He serves US. Why is don so dumb?

Lord Trump has never been a lowly "employee" (how crass).  He doesn't know how to be one.  Lord Trump is a businessman.  As any businessman knows, the higher position you hold, the fewer peons you have to answer to.  Lord Trump has ascended to president of the USA.  In his mind, there is no higher position (well, except for ruler of the world).  Evidently he either didn't have to take or he slept through his Social Studies (political science) classes in school.  Lord Trump sees himself as having obtained the position of a god.  That's why he can't understand why so many seem to oppose his commands (in every country).  After all, who questions a god?  (Not even Muller).  Whatever he desires should simply happen.  Those he graciously rules over should eagerly jump to fulfil his commands.  Lord Trump sayeth: "I want a wall".  *POOF!*  A wall is built (appears?).  Lord Trump commands: "Mexico will pay for it"  *POOF!*  Mexico simply hands him the money.  Lord Trump sayeth: "I am not a liar"  *POOF!* Everyone believes everything he says without question.  "Putin is a really good guy"  "POOF!" Any doubts about Putin are forever erased.  Lord Trump has only to speak to foreign "princes" (a much lower position than god) and they all gladly obey.  "N. Korea - no more nukes!"  "POOF!" N. korea gives up all its nukes... forever!

Since, in his mind, Lord Trump has obtained the golden scepter of goodhood (one step above emperor), he has no reason to answer to or explain his actions to anyone.  

And we the people who voted for President Trump hired him to build the wall.