WASHINGTON - There is something liberating about a lifetime appointment and a certainty in the correctness of one's ideas. Justice Antonin Scalia has both. He travels the world as a sought-after speaker, snags White House dinner invitations and packs one of the most powerful pens on Earth as a leading conservative voice on the U.S. Supreme Court. More than once, he has looked over a crowd of Washington power-brokers and observed that there is no one in the group who can help him or hurt him. Yet while Scalia's influence and presence are undisputed, there have been significant frustrations as...