We're talking about any random court, however, but the ICC.
It does not have a history of "slapping any label on any suitably vilified candidate".
Put another way: The US has a history of deciding it is allowed to start actual wars to overthrow the kind of people committing the kind of crimes that gets you targeted by the ICJ.
The US just wants its own people to not be subjected to what it has a long history of imposing on others.