I think you're being naive here. The MSM would still be the conduit through which people would hear of these briefings, and the MSM's main sources of commentary about these updates would be the likes of Nancy Pelosi and Harry Reid.
If the MSM wants to paint a bad picture, briefings to Congress won't change that.
C-SPAN would cover it. So would all the blogs.
The MSM is being bypassed more and more every month.
But the Bush WH seems to want to play the Beltway game. They don't get it.
Don't agree. Can be done. Reagan and slick Willy did it. It would take effort by Bush since he is such a poor communicator but he could at least get the message out directly to his consitituencies and get support for war etc. up to 50% or so.