Sorry for the delay:
Vincent (the Chin) Gigante was who I was thinking of. He wasn't charged in the Commission case because he was considered non compos mentis. He got away with the crazy act until fairly recently. Gotti was charged at the same time jointly with Mr. Neil, but Mr. Neil died the same day the trial was to start, and the government had to separate Gotti's case from Neil's.
Zia's turn...