For another complicated IRS recovery bounty case, see the story about Vanguard's "internal whistleblower" who is making the case to the IRS that their cost-saving structure is an unfair advantage, and that they owe taxes on those savings to the government. If that "whistleblower" prevails, he'll have harmed the retirement savings of tens of millions of Americans, all of whom benefit from Vanguard's novel structure. But there you go!
As for this guy's superiors not being prosecuted, yeah, that sucks. The prosecutors can only make the cases they can make; this guy confessed.