Both McCain & Graham make a critical point in their presser. Not only will we not know what info is presented at these closed hearings (except for leaks), but each hearing will not know what was presented at the other hearings.
The Congressmen on each of these 3 committees will have no idea what was testified to in the committee hearings they werent allowed to attend.
Called it stove-piping. Pointed out that if each hearing yields testimony blaming the other dept (CIA, DoD, State), no one will ever know.
Without a mechanism/OPEN investigation that bridges stove-piping, Congress, the press (i.e., FOX), and the public will only be able to rely on leaks and dis-info.
If left to stand, that point alone ensures Benghazi will be buried.