Understandable in that case. In that situation the only option appears for the lead criminals to have "accidents", with plausible deniability.
Wikipedia says Larry went to jail his part of the House Banking Scandal. Not in Wikipedia...because it reflects badly on him...is that he was also convicted of spending campaign funds gambling in the Bahamas.
The FBI also somehow discovered who was "lending" Larry a car every time he came to town, who gave him fairly large amounts of cash on a regular basis, and some irregularities in some vacation trouble. I have no idea who could have possibly told them.