Within then national government, power is divided among three branches: the legislative, executive, and judicial branches.
The legislative branch consists of Congress, which has two parts - the House of Representatives and the Senate. Congress's main function is to make laws. There are 100 senators (two from each state) and 435 representatives (the number from each state depends on the size of the state's population).
The President is the head of the executive branch and the country. The executive branch administers the laws (decides how the laws should be carried out). In addition to the President, the Vice-President, and their staffs, the executive branch consists of departments and. agencies.
There are now 14 departments, including Treasury, State, Defense, and Health and Human Services. Each department has different responsibilities. For example, the Treasury Department manages the nation's money, while the State Department helps make foreign policy. The President appoints the department heads, who together make up the President's Cabinet, or advisers. The agencies regulate specific areas. For example, the Environmental Protection Agency tries to control pollution, while the Securities and Exchange Commission regulates the stock markets.
The judicial branch interprets the laws and makes sure that new laws are in keeping with the Constitution. There are several levels of federal courts. The Supreme Court is the most important, it has nine members who are appointed for life.
The system of checks and balances, established by the Constitution, is meant to prevent any branch from having too much power. Each branch has certain controls over the other branches. For example, Congress makes the laws but the president can veto, or reject, a law and the Supreme Court can decide a law is unconstitutional.
State and Local Government
Each state has its own constitution. Like the national government, state governments are divided into legislative, executive, and judicial branches. There are state senators and representatives and state court systems. Just as the President is the leader of the national government, each state has a governor as its leader. Below the state level of government, there are county and city governments.