Sestak knows what happened..For the sake of the nation, he needs to tell all and, if it looks like what it seems and all those involved are removed from office, Sestak could be a hero for blowing that whistle.
Sestak is a Democrat. First and foremost, their loyalty is to the Party. All of these calls to get this crew to testify under oath are a joke as well. "Under oath" means nothing to a Dim. A Dim-appointed Special Prosecutor? Impeachment by a Dim-controlled Congress? A complicit MSM failing to ask the really tough questions?
As many legs as this story may have, it'll eventually lead nowhere.
Although, I certainly hope I am wrong in my cynicism.