The Constitutional Citizen President of the United Mexican States ( ) is the head of state and government of Mexico. Under the Constitution, the president is also the Supreme Commander of the Mexican armed forces. The current President is Felipe Calderón.
Currently, the office of the President is considered to be revolutionary, in that it is the inheritor of the Mexican Revolution and the powers of office are derived from the Revolutionary Constitution of 1917. Another legacy of the Revolution is its ban on re-election. Mexican presidents are limited to a single six-year term, called a sexenio. No one who has held the post, even on a caretaker basis, is allowed to run or serve again. The constitution and the office of the President closely follow the presidential system of government.