Ann Coulter, the right wing's dial-900 girl--a rail-thin, chain-smoking, hard-drinking, big-eyed leggy blonde who winkingly serves up X-rated ideological smut on liberals--is at it again. "Whenever the nation is under attack, from within or without, liberals side with the enemy," Coulter writes--or sneers--in Treason, her follow-up effort to the best-selling Slander. Like its predecessor, Treason sits atop the best-seller charts, riding higher than one of Coulter's signature miniskirts. But this time around, it isn't the liberals who are up in arms; it's the conservatives. Coulter's slurring of Democrats--from Harry Truman (soft on communism) to Tom Daschle (soft on Iraq)--has set...