Administration officials showed senators video of Bergdahl to support claims that his health was failing. The Obama administration gave senators a classified briefing Wednesday night on just what thinking went into the prisoner trade to recover Sgt. Bowe Bergdahl from Afghanistan. But that won't end questions from Congress. "This gentleman needs to be looked into, quite extensively," said Sen. Joe Manchin, D-W.Va., following the briefing, referring to questions about whether Bergdahl deserted the military. During the classified briefing, senators were shown a roughly minute-and-a-half-long "proof of life" video of Bergdahl, which the Taliban had provided, in which the soldier "didn't...