Historian Doris Kearns Goodwin on "cutting the past some slack"
In this web exclusive Pulitzer Prize-winning historian Doris Kearns Goodwin, the author of several books on presidents (including Abraham Lincoln, Theodore Roosevelt, Franklin Delano Roosevelt and Lyndon Baines Johnson), talks with correspondent Mo Rocca about living with dead presidents, and how we should judge the leaders of the past by their imperfections as well as their accomplishments.