What would make it illegal? If targeted assassinations are legal, and only the POTUS can decide which citizens are “enemies”, then what would prevent a POTUS from legally assassinating whoever he wanted?
Or are you saying that targeted assassinations are NOT legal, and that the courts would rule that way if a case was before them?
If they are not legal, what current law forbids them, and what needs to happen to get the court ruling that affirms the illegality of targeted assassinations of US citizens?
Because not all laws are legal.