Federal Government of the United States
From dKosopedia
The government of the United States, established by the Constitution, is a federal republic of 50 states, a few territories and some protectorates. The national government consists of the executive, legislative, and judicial branches. The head of the executive branch is the President of the United States. The legislative branch consists of the United States Congress, while the Supreme Court of the United States is the head of the judicial branch.
The federal legal system is based on statutory law, while most state and teritorial law is based on English common law, with the exception of Louisiana and Puerto Rico. The United States accepts compulsory ICJ jurisdiction, with reservations.