Trump simply cannot help himself. Like a child. Or an addict. Unfortunately for him, he is incredibly thin-skinned. He is super-sensitive. He cannot hear even the slightest challenge or criticism without coming out swinging like a ranting, raving, unhinged, emotional lunatic, which sends him careening off message.
As Garp prognosticated 38 years ago, his (Trump's) "rule of law" shows a terminal condition of thought brought on by his view of the reality in which he believes he is master of all and, in turn, all then are subservient in deeds, thoughts, investigation, logic, honesty, and charity, to himself. This is, in this writer's opinion, well, delusional.