But I care that some president can simply say "Hey specific corporation, you have 45 days to comply with the rules that are in my head."
> You can't even do something as simple as set up an S Corp in the US if you are foreign.
Sure, that is a rule in the law, no problem with that. But what if I'm friends with Trump and he makes an exception just for me?
Here in Europe, we have separation of law, government and religion. I know it's a bit more blurry in the states (see the "In god we trust"). In this case (and in some other cases such as pardoning prisoners), your government seems to interfere with your law. In my opinion, that becomes very tricky business if you start eroding those rules. Because when you're friends with the government, the law doesn't apply to you. And if you're enemy with the government, forget about your rights.