In the United States has three key functions:
Lawmaking: Congress is responsible for making and passing federal laws. This involves introducing, debating, amending, and voting on bills. Both the House of Representatives and the Senate must approve a bill for it to become law.
Representation: Congress represents the interests of the American people. Members of the House of Representatives are elected based on population, ensuring proportional representation, while the Senate provides equal representation with two senators per state.
Oversight: Congress oversees and checks the actions of the executive branch, including the President and federal agencies. This includes conducting investigations, holding hearings, and ensuring that the government acts within the law.