Have his tangible assets (buildings, cash...etc) confiscated since they're all, for the most part, tied to numerous fraudulent misrepresentations and crimes, and fucking jail him and throw away the key like they would for any other non-wealthy or politically connected fellon. We've all seen him commit crimes on TV, brag about them publicly, admit to them multiple times, his co-conspirators have been sentenced and gone to jail in cases where he's named as a party, and yet we're still doing "more investigations" and lining up cases so they're "just right." This level of genuflection and weasel wording wouldn't even be fathomable for a normal person. "Oh but he has money to fight" - yeah that's the fucking problem. 99% of the shit I've seen him and his attorneys throw at the courts just to gum up the works would get any other attorney and/or defendant laughed out of the court room. Start heavily sanctioning his attorneys for making a mockery of the court, start dismissing his bullshit staling with extreme prejudice...etc. We have the solution - we use it every single day against hundreds of thousands of normal people caught up in the system. Yet this one single turd is somehow above it and continues to get the kid glove treatment.

Baring all that...maybe invest the investigation money in a 10 year supply of hamberders and diet cokes and send it to him so he hopefully fucking croaks before the election.