Suppose you asked a doctor to see his diploma (or other proof of his professional qualifications), and he refused. What would you do then? Find another doctor? Or take his word that he is legitimate?
Any doctors office that I’ve visited proudly displays their signed diplomas on the wall. I might be worried if I didn’t see one - I definitely would be worried if I didn’t see one.
I think another thing you should be thinking about is our troops. He would be their Commander in Chief not our Commander in Chief. This means they would have to follow his rule and if any charges were brought against them, the Commander in Chief would be the one that would be libel. If he is not eligible to be Commander in Chief (ineligible) then our service men would then be libel for any charges brought against them for their actions.
If you are going to fight for anything - fight for them. They’ve been doing it for us, its time we stand up for them.