Under the Sixth Amendment. The Sixth Amendment guarantees a criminal defendant the right to impartial jury. The jury will consider the evidence against the defendant and decide whether to find him or her guilty of the crime. Twelve jurors must agree in order to find a defendant guilty or not guilty. If the jury fails to reach a unanimous verdict and finds itself at a standstill, the judge may declare a mistrial. Then the case may be dismissed or the trial may start all over again (LC).
The origins of the jury system are from the 11th-century England. The concept was that people were entitled to a jury of their peers. At the time, a peer meant someone who knew the accused, someone who lived in the neighborhood and knew who was a liar and who