I would have thought calling out the repulsiveness of the Holocaust and the health and wellbeing of a continued German-state would have been the moral justifications, but okay, sure.

> and the same is true of US leaders.

The thing is, there isn’t enough in the way of shared morality between nations of the world to make this claim. From our perspective, the POTUS is imbued with the power to deal with foreign nations, and this includes both diplomatic and war functions, and to do so in a way that is beneficial to America. That’s what he is elected for, so imposing the ICC’s international justice on our elected leaders is in essence the same as trying to impose a foreign justice on America. We have our own laws, and govern our military with our own code of justice passed by our Congress, therefore we cannot abide by the ICC’s infringement on our sovereignty, nor will we tolerate a threat from it against our elected leaders.