White House Wants Frist to Try Again on Bolton

Bill Frist, having said that's it for Bolton, has changed his mind:

WASHINGTON -- Reversing field after a meeting with President Bush, Senate Majority Leader Bill Frist said he will continue pushing for a floor vote on John R. Bolton for U.N. ambassador. Frist switched his position after initially saying today that negotiations with Democrats to get a vote on Bolton had been exhausted.
Talking to reporters in the White House driveway after he joined other GOP lawmakers for a luncheon with Bush, Frist said: "The president made it very clear that he expects an up or down vote."

What's going on? Why try again if it's a foregone conclusion as long as the White House keeps stonewalling on the document requests? Steve Clemons has one suggestion:

So many people are surprised by the White House's intransigence on the documents that they believe that something seriously damaging must be in them.