A number of years ago, Newsweek magazine carried the story of the memorial service held for Hubert Humphrey, former vice-president of the United States. Hundreds of people came from all over the world to say good-bye to their old friend and colleague. But one person who came was shunned and ignored by virtually everyone there. Nobody would look at him much less speak to him. That person was former president Richard Nixon. Not long before, he had gone through the shame and infamy of Watergate. He was back in Washington for the first time since his resignation f…