Sen. Tom Coburn, R-Okla., told me flatly that he did not offer to broker a million-dollar deal between his Senate colleague, John Ensign, R-Nev., and the family of Ensign's mistress.
Doug Hampton, the husband of a staffer with whom Ensign had an affair, makes the explosive allegation in an interview with "Nightline's" Cynthia McFadden that will air on Monday.
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