As Richard Pious traces the anatomy of presidential failures, he argues that, under conditions of high pressure and great uncertainty, presidents too often engage in “situational constitutionalism” and fail to distinguish between their personal stakes and the nation’s best interests. His carefully reconstructed and detailed case studies do not present merely the conventional wisdom about some obvious presidential blunders, but include incisive analyses of the underlying dynamics of presidential failures that contain important lessons for future presidents and citizens alike.