The Executive Branch of the United States Government is headed by the President, who is responsible for domestic policy, including the enforcement of federal laws, and foreign affairs, serving as Commander-in-Chief of the Armed Forces.
The Legislative Branch of the United States Government includes Congress, the chief law-making body in the country, and agencies that provide support for the House of Representatives and the Senate.
The Judicial Branch of the Government includes the Supreme Court, which is the highest court in the country, and lower Federal courts. Courts hear arguments and issue decisions about the interpretation and application of laws and whether they violate the Constitution.
The members of the Constitutional Convention signed the United States Constitution on September 17, 1787 in Philadelphia, Pennsylvania. The Constitutional Convention convened in response to dissatisfaction with the Articles of Confederation and the need for a strong centralized government. After four months of secret debate and many compromises, the proposed Constitution was submitted to the states for approval. Although the vote was close in some states, the Constitution was eventually ratified and the new Federal government came into existence in 1789. The Constitution established the U.S. government as it exists today.
Learn more about the United States Constitution: