The purpose would not be to cancel recess and try one Bushist after the next, but to stand up to a bully who would then probably back down, and if he wouldn’t then, so be it, we would investigate and demand documents and testimony, and go straight to inherent contempt when we didn’t get them, asserting proper authority where Bush asserted improper authority.
Nancy Pelosi has not yet been assertive and bold, but reactive and cautious, which encourages the bully, whose nuts should be firmly in her grasp.
(Impeachment should be neither off the table nor on it. It is beside the point right now, since you can’t get a conviction and ouster.)