Unless he was still doing the same shit with his kids within the statute of limitations (likely), his exposure will be civil and not criminal. That said, a couple hundred million in fines should get him pretty riled up.
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As long as the roots are not severed, all will be well in the garden.
Its not like anybody needed probe for us to know that this is a multigenerational criminal enterprise that the politicians of this country allow to operate unfettered because there could be something in it for them.