credibility, credulity

It is lamentable to watch one man destroy his reputation for honesty and forthrightness attained over years of public service. Paul Volcker is damaging himself beyond repair .. He has tried to prevent his chief investigator , Parton, from responding to a congressional subpoena. He lobbied congressmen in effort to thwart the subpoena and has threatend the other investigators with enforcement of non-disclosure agreements. What is the purpose of this reprehensible conduct? It can only be for the protection of Koffi Annan and other corrupt U N officials. Why is Volcker compromising himself in this fashion does he believe he serving some greater good by acting in this fashion? Please tell us Mr. Volcker.