The United States presidency is the executive office established by Article II of the Constitution of the United States, ratified in 1788. The president serves as head of state, head of government, and commander-in-chief of the armed forces. The office is held for four-year terms, with a two-term limit imposed by the Twenty-Second Amendment (1951). The president is elected indirectly through the Electoral College, a body of electors apportioned among the states and the District of Columbia.

The president is vested with executive power, the authority to sign or veto legislation, the power to appoint federal judges and cabinet officers (subject to Senate confirmation), and broad authority over foreign policy and military affairs. The executive branch encompasses the Cabinet, the Executive Office of the President, and a large array of federal agencies and departments. Presidential power has expanded significantly since the founding era, a trend attributed variously to war, economic crises, and the growth of the administrative state. The degree to which this expansion is constitutional or desirable is a matter of active debate - see United States Presidency - Debate.

The president is elected every four years on a fixed schedule. A candidate must be a natural-born citizen, at least 35 years of age, and a resident of the United States for at least 14 years. No person may be elected more than twice. In the event of death, removal, resignation, or incapacity, the vice president assumes the office; the order of succession beyond that is established by federal statute.

Presidential elections use the Electoral College, in which each state receives electors equal to its total congressional representation. Most states award all their electoral votes to the candidate who wins the state's popular vote (winner-take-all), though Maine and Nebraska use a congressional-district method. A candidate must receive a majority of electoral votes (currently 270 of 538) to win. If no candidate achieves a majority, the House of Representatives selects the president, with each state delegation casting one vote. Critics and defenders of the Electoral College advance competing arguments about its relationship to democratic representation and federal balance - see United States Presidency - Electoral College Debate.

A president may be removed from office through impeachment by the House of Representatives followed by conviction in the Senate. The Constitution specifies grounds of treason, bribery, or other high crimes and misdemeanors. Four presidents have been impeached by the House: Andrew Johnson in 1868, Bill Clinton in 1998, and Donald Trump in 2019 and again in 2021. None has been convicted by the Senate. A president may also be removed under the Twenty-Fifth Amendment if deemed unable to discharge the duties of the office.

The presidency has evolved substantially from its original constitutional design. Early presidents largely deferred to Congress on domestic legislation; the modern presidency is characterized by a dominant executive, extensive use of executive orders, and direct public communication. For a full account, see United States Presidency - History.

There is broad scholarly and legal consensus on the basic constitutional structure of the office - term limits, eligibility requirements, and the general separation of powers framework - as interpreted through Supreme Court precedent. The boundaries of executive power, however, remain actively contested in courts, Congress, and political discourse. See United States Presidency - Constitutional Law Consensus.

• Expansive executive authority - Some legal and political thinkers argue that the unitary executive theory vests broad, largely unreviewable power in the president over the executive branch, particularly in national security and foreign affairs. See Unitary Executive Viewpoint.
• Constrained executive - Others hold that presidential power is strictly limited by statute, treaty, and the Constitution, and that executive overreach must be checked by Congress and the judiciary. See Constrained Executive Viewpoint.
• Electoral College reform or abolition - A significant body of opinion holds that the Electoral College distorts democratic representation and should be reformed or replaced with a national popular vote. See Electoral College Reform Viewpoint.
• Electoral College defense - Others argue the Electoral College serves federalist principles, protects smaller states, and prevents the concentration of campaign attention in high-population urban centers. See Electoral College Defense Viewpoint.
• Imperial presidency critique - A view across portions of the political spectrum holds that the modern presidency has accumulated power far beyond constitutional intent, to the detriment of republican governance. See Imperial Presidency Viewpoint.
• Presidential legitimacy and popular mandate - A distinct line of argument holds that structural features of the electoral system - including but not limited to the Electoral College - can produce presidents who take office and govern without a popular majority, raising questions about the democratic legitimacy of executive authority independent of EC reform proposals. See Presidential Legitimacy Viewpoint.

• United States Presidency - History
• United States Presidency - Debate
• United States Presidency - Electoral College Debate
• United States Presidency - Constitutional Law Consensus
• United States of America
• United States Congress
• United States Supreme Court
• Separation of Powers
• Electoral College
• Executive Orders

1. U.S. Const. art. II.
2. U.S. Const. amend. XXII (ratified 1951).
3. U.S. Const. amend. XII (Electoral College procedure).
4. U.S. Const. amend. XXIII (D.C. electors).
5. 3 U.S.C. § 19 (presidential succession beyond the vice president).
6. U.S. Const. art. II, § 4 (impeachment grounds).
7. U.S. Const. amend. XXV (presidential incapacity and succession).
8. Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579 (1952) (foundational Supreme Court ruling on limits of executive power).
9. Seila Law LLC v. Consumer Financial Protection Bureau, 591 U.S. 197 (2020) (recent unitary executive jurisprudence).