United States Senate
In short
The United States Senate is the upper chamber of the United States Congress. It works alongside the House of Representatives to create federal laws and oversee the government.
In plain words
It is a group of 100 people who represent every state in the country. They vote on new rules, approve important people chosen by the President, and decide on treaties with other nations.
A simple example
If the President wants to appoint a new Supreme Court judge, the Senate must vote to approve them first.
Why it matters
The Senate provides a check on the President's power to ensure no single person has total control. It also ensures that smaller states have an equal voice in the national government.
Easy to mix up
Do not confuse it with the House of Representatives, which is the lower house and represents people based on population size.