[H]igh Crimes and Misdemeanors... involve corruption, betrayal, or an abuse of power that subverts core tenets of the U.S. governmental system. They … - Laurence Tribe

I think it very important that you view the vacancy created by Justice Souter's resignation as an opportunity to lay the groundwork for a series of appointments that will gradually move the Court in a pragmatically progressive direction. Neither Steve Breyer nor Ruth Ginsburg has much of a purchase on Tony Kennedy's mind. David Souter did, and it will take a similarly precise intellect, wielded by someone with a similarly deep appreciation of history and a similarly broad command of legal doctrine, to prevent Kennedy from drifting in a direction that is both formalistic and right-leaning on matters of equal protection and personal liberty.

Americans have moved into ideological echo chambers... everything they read or hear reinforces their predispositions and makes them more intolerant of opposing views...

[T]he "dormant Commerce Clause" [is] a set of unwritten constitutional principles limiting state commercial regulation in the face of congressional silence coupled with the Constitution’s delegation to Congress of the power to regulate interstate commerce.