So I guess we can ascertain, from Brit Hume's comments, that the Republicans are going to push Toensing's testimony as fact. This tactic is typical of the conservative noise machine. Say a lie often enough, and it becomes the truth, at least in the heads of people that are not paying attention. Unfortunately there are enough Americans in this category to give the technique punch.
Here is how it stands. Either Toensing like under oath, or the head of the CIA, the Justice Department, and the President lied in calling her covert. You choose. I do realize that this might be a tough call, since the President, the Justice Department, and even the CIA have been lying a lot in the past six years.