Via Volokh Conspiracy, can one file suit against people who:" ... conspired with the American government in its attempts to eliminate him and have otherwise taken various steps to interfere with his ability to establish himself and live freely as a martian."?
Answer: No. "...It follows that if the plaintiff is not a person in that he is neither a human being nor a corporation, he cannot be a plaintiff as contemplated by the Rules of Civil Procedure. The entire basis of Mr. Joly’s actions is that he is a martian, not a human being. There is certainly no suggestion that he is a corporation. I conclude therefore, that Mr. Joly, on his pleading as drafted, has no status before the Court."