CBS is the eye of a political storm over documents about George W. Bush's National Guard service. Republicans are calling for Dan Rather's head over his report on Bush's failure to complete his Guard duty that aired last Wednesday on "60 Minutes II." Both CBS and Rather are standing by the story saying that anonymous sources they used prove the story. Dueling experts claim on the one hand that the documents are forgeries and on the other that they are not. Meanwhile, Karl Rove is chortling over the distraction the tempest in a TV is causing.