The legislative branch writes federal law, controls spending, investigates public problems, and represents the people and the states through two chambers.
Two chambers, one Congress. The House and Senate usually must agree on the same bill before it can become law — but their deliberately different designs shape how each chamber actually works day to day.
In republican government, the legislative authority necessarily predominates.
James Madison, Federalist No. 51
Explore Congress
Senate100 members, equal state representation, 6-year terms.→
Why Bicameral?Why the Constitution created two chambers.→
Powers of CongressLawmaking, the purse, oversight, and checks on other branches.→
Congressional CommitteesWhere most bills are actually shaped or stopped.→
Congressional OversightHow Congress checks the executive branch.→
Congressional Rules and ProcedureWhy procedure often decides outcomes.→
How a Bill Becomes a LawThe full path from idea to statute.→
“Congress” isn’t one body with one opinion
A common misconception is treating Congress as a single, unified actor with one collective position. It’s actually two structurally different chambers, hundreds of individual members, and dozens of committees, each with their own incentives and procedural leverage — a bill’s fate often depends on navigating all of that internal complexity, not just “Congress” deciding something as one entity.
