winning author and new york times columnist gretchen morgenson discusses her latest book, titled "reckless endangerment." >> gretchen morgenson, in your book "reckless endangerment," next to the picture of james johnson you write of " a calculated political operative, johnson was the architect of the public-private home ownership dropped almost destroyed the economy in 2008." why so much on his shoulders? >> we have to go back in time. a crisis this large is not happen overnight. if you really want to understand what happens, to create this mortgage bubble and the ensuing crisis, you...