America is a democracy, not a bureaucracy. The executive branch is governed by a single representative elected by the people. It is becoming increasingly apparent that the people didn't make a great choice this time but our constitutional republic is also one of the foundational pillars of american strength and trump being an idiot doesn't change that.
The judicial branch has authority to stop him but they're only supposed to use it if they are convinced that what he's doing is unconstitutional. Some of the executive branch's appointee's have authority over him but only in specific circumstances (such as 25th amendment) and they're usually in agreement with him since he gets to appoint them anyways. Otherwise, all authority in the executive branch effectively belongs to the president and random midlevel bureaucrats can only exercise it on his behalf.
The judicial branch has authority to stop him but they're only supposed to use it if they are convinced that what he's doing is unconstitutional. Some of the executive branch's appointee's have authority over him but only in specific circumstances (such as 25th amendment) and they're usually in agreement with him since he gets to appoint them anyways. Otherwise, all authority in the executive branch effectively belongs to the president and random midlevel bureaucrats can only exercise it on his behalf.