So only the US can prosecute their President for war crimes, and it has to be based on US laws? That’s not a legitimate discussion, I’d say.
So the people who write the laws just write it so that they didn’t break the laws. That’s literally what Obama did for Bush, legalizing warrantless spying, ramping up the drone war, etc.
I mean, that’s literally the point of the ICC, is that governments can just be like “we didn’t do anything wrong” and then continue abusing the world. So you take them to a neutral third party… the ICC.