What's behind Bush's push to redefine Article 3? [audio 5min]

President Bush has asserted that the language of Common Article 3 of the Geneva Conventions, which governs the treatment of war prisoners, is too vague. But his proposed legislation to more closely define how detainees are treated is being opposed by some key members of his own political party. Brad Berenson, former associate White House counsel during Bush's first term, talks with Alex Chadwick about the president's position.