Persistent questions about Hillary Clinton’s health continue to dog her on the campaign trail, especially after another public coughing fit this week. Steve Irwin’s parents unearth a “heart-rending” letter the ‘Crocodile Hunter’ wrote before his death. And we have this hour's top trending stories. Guests: Susan Swift, Heather Laskin, Sarah Westwood, John Hayward, Troy Tolbert. Trending Today USA 09-07-16 Part 3

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