E.J. Dionne, Jr. explores the options Democrats have in responding to a surge. The least likely is Congress’ exercise of its constitutional power of the purse; the most likely is a resolution that amounts to mere posturing without assuming any real responsibility for the consequences.
The middle ground--revisiting the resolution authorizing the use of force in Iraq--has the advantage, to my mind, of a debate (whether it can be reasonable is another question altogether) about practical U.S. aims in Iraq.
I remember some examinations of the 2006 exit polls which suggested that not all the opposition to the President’s iraq policy came from those who wanted to get out as quickly as possible. Is there, perhaps, still a majority for doing what it takes to win in Iraq? This would lead Congress in a different direction than that imagined by Dionne.
Update: Here, courtesy of The Corner, is the Reid/Pelosi preemptive stike against a surge.