American presidents are the elected leaders of the United States, serving as both the head of state and the head of government. They are responsible for enforcing laws, directing the executive branch, and representing the country in diplomatic matters. The presidency is a key part of the U.S. government, established by the Constitution. There have been 46 presidents since the office was created in 1789, starting with George Washington. Each president has faced unique challenges and opportunities, shaping the nation’s history. The president serves a four-year term and can be re-elected for one additional term, as outlined in the 22nd Amendment.