Each of the 50 states sends 2 people to the Senate, so there are a total of 100 senators. This means that each state has equal representation in the Senate. Each senator serves a term of 6 years. When their 6 year term is over, the people from that state may choose to elect a new senator or keep the same one. There is no limit on the number of terms a senator can serve.
Senators must:
Be at least 30 years old.
Be a U.S. citizen for the past 9 years.
Live in the state they represent.
The Senate has special jobs that only it can do. It can:
Say yes or no to any treaties the president makes.
Say yes or no to any people the president recommends for jobs, such as cabinet officers, Supreme Court justices, and ambassadors.
Can hold a trial for a government official who does something very wrong.