Mark Brown of the Chicago Sun-Times  has the latest from the Blago pre-trial motions. I think he has it wrong.

The real reason the judge and Fitzgerald want to bury Obama's testimony is that if he was indeed aware of a bribe, and failed to report it, he would be guilty of the federal crime of misprision of a felony, which is the same charge Arlen Specter has made against Joe Sestak,

U.S. Code Title 18, Section 4:

Misprision of a Felony: Whoever, having knowledge of the actual commission of a felony cognizable by a court of the United States, conceals and does not as soon as possible make known the same to some judge or other person in civil or military authority under the United States, shall be fined under this title or imprisoned not more than three years, or both.