What is the President of the United States ?

The President of the United States of America (POTUS) is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces. This position places its holder in leadership of the nation that has the largest economy by real and nominal GDP and the most expensive and thus most powerful military, with command authority over the largest active nuclear arsenal. The president is frequently described to be the most powerful person in the world as no other nation gives so much power to its chief executive in its constitution.

Article II of the U.S. Constitution vests the executive power of the United States in the president and charges him with the execution of federal law, alongside the responsibility of appointing federal executive, diplomatic, regulatory, and judicial officers, and concluding treaties with foreign powers with the advice and consent of the Senate. The president is further empowered to grant federal pardons and reprieves, and to convene and adjourn either or both houses of Congress under extraordinary circumstances. Since the founding of the United States, the power of the president and the federal government has grown substantially. Each modern president, despite possessing no formal legislative powers beyond signing or vetoing congressionally passed bills, is largely responsible for dictating the legislative agenda of his party and the foreign and domestic policy of the United States.

The president is indirectly elected by the people through the Electoral College to a four-year term, and is one of only two nationally elected federal officers, the other being the Vice President of the United States. The Twenty-second Amendment, adopted in 1951, prohibits anyone from ever being elected to the presidency for a third full term. It also prohibits a person from being elected to the presidency more than once if that person previously had served as president, or acting president, for more than two years of another person's term as president. In all, 43 individuals have served 44 presidencies (Cleveland's two non-consecutive terms each counted) spanning 56 full four-year terms. On January 20, 2009, Barack Obama became the 44th and current president. On November 6, 2012, he was re-elected and is currently serving the 57th term, which ends on January 20, 2017.