The document discusses the three branches of the US government established by the Constitution: 1) The legislative branch is Congress, which has the power to make laws. It is divided into the House of Representatives and the Senate. 2) The executive branch is led by the President, who enforces and carries out the laws. 3) The judicial branch is the Supreme Court and lower federal courts, which settle disputes over laws and can declare laws unconstitutional. The system of separation of powers and checks and balances ensures no single branch becomes too powerful.