The clashes between President Abraham Lincoln and Chief Justice Roger B. Taney over slavery, secession, and the president's constitutional war powers went to the heart of Lincoln's presidency. James Simon, author of the acclaimed" What Kind of Nation," brings to vivid life the passionate struggle during the worst crisis in the nation's history, the Civil War. The issues that underlaid that crisis -- race, states' rights, and the president's wartime authority -- resonate today in the nation's political debate.