David McCullough: President Trump's Disregard for History Is 'Utter Nonsense’

Over the course of nearly 50 years, Pulitzer Prize-winning historian David McCullough has traveled across the U.S. speaking to audiences — at universities, the White House and even before a joint session of Congress — about the lessons of history. Some of his most recent speeches are compiled in his new book The American Spirit: Who We Are and What We Stand For, out Tuesday.