United States citizens vote in federal elections and serve on juries. It is the responsibility of United States citizens to vote in federal elections. Voting is important. However, there is no law that says citizens must vote. It is also the responsibility of citizens to serve on a jury when they are asked. If a citizen gets a court letter to serve on a jury, the person must go. A jury is a group of citizens in a courtroom that listen to a trial. The jury decides the outcome of the trial. It is the responsibility of United States citizens to vote and serve on juries.