Of the many delusions plaguing the right throughout the Clinton impeachment crisis, none was more peculiar than its belief that Sidney Blumenthal, a political journalist turned White House aide, stood at the white-hot center of the Clinton cabal. In truth, Blumenthal was a somewhat peripheral figure in the Clinton White House. One of roughly two dozen "assistants to the president," Blumenthal was Clinton's big-ideas man, the guy who got whisked into the Oval Office whenever the president wanted to consider his place in the cosmos. Blumenthal's principal task was to organize a series of conferences on the "Third Way," wherein...