The legislative branch of the U.S. government, which is responsible for making and passing laws, is also known as the U.S. Congress. Congress is comprised of two houses, the House of Representatives and the Senate. The laws enacted by Congress are enforced by the executive branch and, when needed, interpreted by the judicial branch.
The legislative branch of the U.S. government is an example of a bicameral system in which all legislation must move through two chambers. The lawmaking process was designed to be slow and deliberate with many opportunities for a proposed law (known as a bill) to be amended and made more favorable by senators and congressmen. The U.S. Congress consists of 535 voting members: 100 senators and 435 representatives.