The President of the United Mexican States is the head of state and government of Mexico.
A head of state or Chief of State is the highest-ranking position in a sovereign state and is vested with powers to act as the chief public representative of that state.
Mexico, officially the United Mexican States, is a federal republic in the southern half of North America.
Donald Trump meets with President of Mexico by Fox News
Under the Constitution, the president is also the Supreme Commander of the Mexican armed forces.
President of Mexico Calls For End Of War On Drugs, "U.S ... by WeAreChange
Currently, the office of the President is considered to be revolutionary, in that the powers of office are derived from the Revolutionary Constitution of 1917.
The constitution and the office of the President closely follow the presidential system of government.
A presidential system is a system of government where a head of government is also head of state and leads an executive branch that is separate from the legislative branch.