What are the two parts of the U.S. Congress?

Why This Matters

The U.S. Congress is the legislative branch of the federal government. Its job is to make the laws of the country. Congress is divided into two parts: the Senate and the House of Representatives. Together, these two chambers debate, write, and vote on new laws. Both parts must agree on a bill before it can go to the President to be signed into law.

The reason Congress has two parts goes back to a disagreement at the Constitutional Convention in 1787. Larger states wanted representation based on population, while smaller states wanted every state to have equal representation. The solution was a compromise: the House of Representatives would be based on population, giving bigger states more members, and the Senate would give every state exactly two senators, regardless of size. This is known as the Great Compromise.

Understanding this structure is important for your citizenship test because many civics questions relate to how laws are made. If you know that both the Senate and the House must work together, you will be ready for several questions about the legislative process. Remember the two names: Senate and House of Representatives.

Key Facts

• Congress has two parts: the Senate and the House of Representatives
• The Senate has 100 members, two from each state
• The House of Representatives has 435 voting members, based on each state's population
• Both chambers must pass a bill before it becomes law
• This two-part structure is called a "bicameral" legislature

Common Mistakes

• Saying "Congress and the Senate" as if they are separate, the Senate is part of Congress
• Forgetting the full name "House of Representatives" and just saying "the House"
• Confusing Congress (legislative branch) with the President (executive branch)

Study Tip

Remember the word "bi" means two. Congress is bicameral, it has two chambers. Think of it like two rooms in one building: the Senate room and the House room. A law must pass through both rooms before it leaves the building. Practice saying "the Senate and the House of Representatives" together until it feels natural.