Throughout American history, presidents have shown a startling power to act independently of Congress and the courts. On their own initiative, presidents have taken the country to war, abolished slavery, shielded undocumented immigrants from deportation, declared a national emergency at the border, and more, leading many to decry the rise of an imperial presidency. But given the steep barriers that usually prevent Congress and the courts from formally checking unilateral power, what stops presidents from going it alone even more aggressively? The answer, Dino P. Christenson and Douglas L. Kriner argue, lies in the power of public opinion. With robust empirical data and compelling case studies, the authors reveal the extent to which domestic public opinion limits executive might. Presidents are emboldened to pursue their own agendas when they enjoy strong public support, and constrained when they don’t, since unilateral action risks inciting political pushback, jeopardizing future initiatives, and further eroding their political capital. Although few Americans instinctively recoil against unilateralism, Congress and the courts can sway the public’s view via their criticism of unilateral policies. Thus, other branches can still check the executive branch through political means. As long as presidents are concerned with public opinion, Christenson and Kriner contend that fears of an imperial presidency are overblown.

The idea that a radical transformation of the Presidency took place during the FDR administration has become one of the most widely accepted tenets of contemporary scholarship. According to this view, the Constitutional Presidency was a product of the Founders' fear of arbitrary power. Only with the development of a popular extra-Constitutional Presidency did the powerful "modern Presidency" emerge. David K. Nichols argues to the contrary that the "modern Presidency" was not created by FDR. What happened during FDR's administration was a transformation in the size and scope of the national government, rather than a transformation of the Presidency in its relations to the Constitution or the other branches of government. Nichols demonstrates that the essential elements of the modern Presidency have been found throughout our history, although often less obvious in an era where the functions of the national government as a whole were restricted. Claiming that we have failed to fully appreciate the character of the Constitutional Presidency, Nichols shows that the potential for the modern Presidency was created in the Constitution itself. He analyzes three essential aspects of the modern Presidency--the President's role in the budgetary process, the President's role as chief executive, and the War Powers Act--that are logical outgrowths of the decisions made at the Constitutional Convention. Nichols concludes that it is the authors of the American Constitution, not the English or European philosophers, who provide the most satisfactory reconciliation of executive power and limited popular government. It is the authors of the Constitution who created the modern Presidency.

Setting the tone for the collection, NASA chief historian Roger D. Launius and Howard McCurdy maintain that the nation's presidency had become imperial by the mid-1970s and that supporters of the space program had grown to find relief in such a presidency, which they believed could help them obtain greater political support and funding. Subsequent chapters explore the roles and political leadership, vis-à-vis government policy, of presidents Eisenhower, Kennedy, Johnson, Nixon, Ford, Carter, and Reagan.

Looks at how the office of the presidency has changed, argues that the president has become too central to national politics, and suggests ways to restore the constitutional balance.