The man is so beyond the pale that even the well-noted Trotskyite Ken Starr has endorsed him.
Harold Koh
See IntLawGrrls and Publius. Meanwhile, Weigel has an invaluable piece explaining the origins of the smear campaign.
One thing to add to Dahlia Lithwick's superb defense of Harold Koh is a comparison with the Bork nomination, allegedly the Most Uncivil Moment in American History (at least before.