 ABC News Washington Correspondent Ann Compton interviews David Pietrusza, regarding his latest book, "1920: The Year of the Six Presidents," a review of the 1920 presidential election, the controversies and issues surrounding that election (the League of Nations, Prohibition, Women s Suffrage, the Red Scare, etc.) and the six presidents involved (Theodore Roosevelt, Woodrow Wilson, Warren Harding, Calvin Coolidge, Herbert Hoover, and Franklin D. Roosevelt).