Final answer:
The greatest source of presidential power lies in the broad executive authority implied by the Constitution, the power to ensure laws are faithfully executed, and especially the president's power to persuade the public and Congress. This 'bully pulpit' allows presidents to influence public opinion and legislative action, and effective use of this power entails negotiation and compromise.
Step-by-step explanation:
Greatest Sources of Presidential Power
The greatest source of presidential power can be argued to stem from the inherent powers implied by the Constitution of the United States. As Article II vests "The Executive Power shall be vested in a President," it establishes a broad scope of authority. Furthermore, the presidential oath implies an overarching duty to protect and uphold the Constitution, while the mandate to ensure that "the Laws be faithfully executed" suggests a role in protecting the nation and its political system.
Powers of Persuasion
The concept of the "bully pulpit" speaks to the president's ability to gain public attention and influence policy through persuasion. This power of persuasion is arguably the president's strongest tool, allowing the occupant of the White House to sway public opinion and legislative processes. The effectiveness of such persuasive efforts is evident in long-lasting legislative achievements, such as the health care reform known as Obamacare.
Balance of Power and the Public Presidency
While the president benefits from a high degree of visibility and the ability to directly influence the legislative agenda, they must also navigate the checks and balances imposed by the other branches of government. Technological advancements have expanded the communicative reach of the presidential bully pulpit, amplifying the president's messages. Effective presidents must navigate this power dynamic, using their position to advocate and negotiate, rather than acting unilaterally on significant matters.