The U.S. House of Representatives is one of the two chambers of the United States Congress, the other being the Senate. It is commonly referred to as the "House" and is made up of 435 voting members, each representing a congressional district within a state. The number of representatives each state has is determined by its population, with more populous states having more representatives.

The main responsibilities of the House of Representatives include passing federal laws, approving presidential appointments, and conducting investigations into various issues. Members of the House are elected by their constituents and serve two-year terms. The House also has the power to impeach federal officials, including the President, if they are found to have committed wrongdoing.

In addition to these duties, the House of Representatives also plays an important role in shaping public policy. Members introduce bills on a wide range of topics, such as healthcare, education, and national security. These bills are then debated and voted on by the full chamber, and those that pass are sent to the Senate for further consideration. If a bill passes both the House and Senate, it is sent to the President for signature or veto. Overall, the U.S. House of Representatives plays a critical role in the functioning of the federal government and ensures that the voices of all Americans are represented at the national level.