Mark K. Updegrove is a presidential historian and the author of five books on the presidency. He currently serves as the President and CEO of the Lyndon B. Johnson Foundation and the Presidential Historian for ABC News. Earlier in his career, he was the director of the LBJ Presidential Library and publisher of Newsweek. He has interviewed seven U.S. presidents. His latest book, Incomparable Grace: JFK in the Presidency, will be published by Dutton in April 2022.