Herman Cain, beleaguered by charges of sexual harassment, was all over Washington last week -- an odd choice of venue, considering that the Iowa precinct caucuses are now just 58 days away and the New Hampshire primary 65. But as I learned when I sat next to Cain Friday morning during a long-scheduled taping of Richard Carlson's "Danger Zone" radio program, Cain seemed unfazed. In conversation before the taping he dismissed the controversy. "No documentation. No witnesses. And I didn't cancel a single event this week" -- although his wife Gloria, accompanying him for the first time, cancelled an interview...