A bit too much is made with "THIS IS NOT NORMAL" regarding Trump (in some cases, it's just that he's an asshole), but our silly system of government, more than many, probably does require respect for "norms" due in part to the whole separation of powers/multiple branches thing. "LOL Executive Privilege is whatever I say it is" is not a good new standard, and one which will presumably persist until there's a Democrat in power.