Obviously a scam. Says it's the United States Treasury that I need to contact them or I'm going to be faced with the federal crime by a judge jury or a magistrate. This is their second attempt. If I don't contact them, they wish me the best of luck and they are leaving it in my lap!
Robocall. Give you a case number and tells you not to ignore this call, mentions appearing before a magistrate or grand jury for a federal offense. Does not say who is calling. Has all the markings of a scam.