I have previously blogged various aspects of the Birkenfeld saga (see here for all posts), including being named Tax Analysts Person of the year (see here).
The takeaway from Birkenfeld's experience is that, if you are going to do this dance, you must come clean and not protect either your self or others (including clients).
Some good quotes from the article:
[Karen E.] Kelly [of DOJ Tax and Walter Anderson prosecution fame] also put Birkenfeld's lawyers on notice: The Justice Department was not part of the IRS whistleblower program, "and you should act accordingly."[Why do I put this last item from the article in this blog? Principally because I had an analogous experience with the esteemed Mr. Dowing while he was serving as one of the prosecutors in the KPMG individual defendant prosecution (the one noted above where the juggernaut of the prosecution fizzled because of even more egregious prosecutorial abuse). The team, including principally Downing, insisted that my client violate U.S. federal and state law to give the prosecutors information without issuing a grand jury subpoena required by federal and state law for that type of information disclosure. (For my prior discussion of this issue, see here.) My client refused to be bullied by the prosecution team, consistent with my client's and my understanding of the law. Dowing et al. prosecuted my client too, but fortunately the prosecution team got their come-uppance for other prosecutorial abuse, of which this relatively minor incident was a fair harbinger.]
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[After giving DOJ Tax criminal attorneys some tantalizing information] Prosecutor Kevin M. Downing "looked at me and said, 'Oh, you watch too much TV. That's Hollywood,' " Birkenfeld recounted in an interview. Birkenfeld said he felt he was treated with "hostility and aggression."
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Meanwhile, Downing had been leading the landmark prosecution of former employees of the big accounting firm KPMG on charges of promoting fraudulent tax shelters. In that case, a court dismissed charges against 13 of the defendants after finding that the government "violated the Constitution it is sworn to defend" by in effect denying them access to counsel. The court said the prosecution's overzealousness was consistent with policies established at Justice headquarters.
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At Birkenfeld's sentencing last year, Downing said the banker's assistance had been indispensable. "I will say that without Mr. Birkenfeld walking into the door of the Department of Justice in the summer of 2007, I doubt as of today that this massive fraud scheme would have been discovered by the United States government," Downing said.
But Downing faulted him for "failing to disclose his involvement with the fraud and the U.S. clients that he aided." If Birkenfeld had been more forthcoming about one of his own clients before the government reached a financial settlement with that client, the California real estate billionaire would have been sent to prison, Downing said.
"We cannot have people, U.S. citizens, engage in that kinds [sic] of fraud scheme, come back here, and put half the leg in the door," Downing told the court, according to a transcript.
Birkenfeld argued that if he divulged client names without a subpoena, he could have been jailed in Switzerland.
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The head of the IRS Whistleblower Office, Stephen A. Whitlock, declined to discuss the Birkenfeld matter, citing confidentiality law. Speaking generally, he said that the whistleblower program "is not an immunity program."
"And if the person who is bringing us the information has some criminal exposure themselves," Whitlock said, "then they need to think about that."