The Prison Rape Elimination Act of 2003 is a law that was created to stop people in prison from hurting each other by sexually assaulting or attacking them.
This law says that all prisons in the United States must have rules in place to stop sexual violence from happening. This means that prisons need to have ways to identify which people might be at risk of being attacked, and to prevent those attacks from happening.
The law also requires prisons to have procedures for reporting any sexual attacks that do happen, so that the victim can get help and the attacker can be punished. There are rules in place to make sure that victims are treated with care and dignity and that they don't get punished for speaking out.
Basically, the Prison Rape Elimination Act is a law that helps protect people in prison from being sexually assaulted or attacked, and makes sure that if something does happen, the person responsible is held accountable.