What is the upper chamber of the US Congress called?

The legislative branch of the United States government is a bicameral body, meaning it is composed of two distinct chambers. The upper chamber, often seen as the more deliberative of the two, is known as the Senate. This design was a result of the Great (Review) Compromise during the Constitutional Convention, aiming to balance representation between states with large populations and those with smaller ones.

Each state, regardless of its size or population, is equally represented in the Senate, sending two senators to Washington D.C. This results in a total of 100 senators serving the nation. Senators serve six-year terms, which are staggered so that approximately one-third of the Senate is up for re-election every two years. This longer term length and staggered election cycle were intended to create a more stable and experienced body, less susceptible to short-term public opinion swings than the House of Representatives.

The Senate holds several unique powers not granted to the lower chamber. For instance, it provides "advice and consent" on treaties negotiated by the President and approves presidential appointments, such as cabinet secretaries, ambassadors, and federal judges. Additionally, the Senate has the sole power to conduct impeachment trials, acting as a jury after the House of Representatives has impeached a federal official. These distinct responsibilities underscore its vital role in the checks and balances of the American political system.