The Nixon/Obama parallels are instructive. Richard Nixon was, and Barack Obama is, a loner with many admirers and few friends. Both preferred to speak to the electorate in heavily scripted settings. Both were lawyers. Both were also charged - nearly every week - with violating the Constitution. Both tolerated substantial cuts in U.S. military spending while inflating social-welfare and environmental obligations. And both did whatever they had to do to appeal to a consistent enemy of the United States and its key allies.