The Constitution of the United States divides the federal government into three branches: legislative, executive, and judicial. That ensures that no individual or group will have too much power. The legislative branch is made up of Congress (the Senate and House of Representatives) and special agencies and offices that provide support services to Congress. The executive branch’s key roles include the President, the Vice President, and the Cabinet. The judicial branch includes the Supreme Court and other federal courts.

Source: United States government