Episode Nine: Expanding Power Jackson, Cleveland, T. Roosevelt, Nixon. Though the powers of the presidency have expanded with the growth of the nation, the process has been anything but smooth. These four presidencies are benchmarks in the development of executive power. Three stretched the office to its constitutional limits; the fourth overstepped those limits and brought on a new era of presidential weakness. Episode Ten: The Balance of Power Madison, Polk, Taft, Clinton. The final episode examines presidential leadership in an era of an increasingly divided government. The American presidency was conceived as one part of a larger system of institutions, and its effectiveness rests in part upon a good measure of cooperation among the branches. The presidents arrayed in this episode suggest four different conceptions of governance within a constitutionally structured balancing act.