I think that the rising Bush-hunta and Miers as hood ornament is being led by a personality fest.
Moreorless, it's a case of popularity and the louder voices trying to tramp out any debate or real discussion.
I am not promoting Miers here, nor Bush (to repeat, I voted for Bush and I've defened the Miers nomination before but within the context of 'name the specifics as to her deficits' rather than rely on an elitist, opinion-driven rejection of Miers based upon disrespect for Bush), BUT, I am losing faith as days pass in both Miers as nominee and Bush as representative of what us conservatives want and need in leadership.
I'm still not to any point where, if push comes to shove, I'd reject Bush in favor of any Democrat (just never going to happen), but the fact that it's been moreorless Libertarian Media heads doing the loudest denigration of Miers AND Bush lately, I'm suspect of the whole negation thing.
Bush's failures on border security seem to be the chief flaring point, in my opinion. That and his spending-a-holic behavior.
Don't forget. Congress spends the money. Bush's failure is the withholding of the veto.