Those are only a few examples of ways that people involved might be prosecuted. Here are some more: The friends/family of an assassinated person could probabl

Those are only a few examples of ways that people involved might be prosecuted. Here are some more: The friends/family of an assassinated person could probably claim wrongful death and cause an investigation. Non-government organizations (e.g. the ACLU) could sue for a review. In any case, the threat of legal repercussions exists, and is likely enough to prevent US citizens from being assassinated arbitrarily.