Final answer:
The Witness Security Program is administered by the Department of Justice, which ensures the safety and fair treatment of witnesses in federal criminal cases.
Step-by-step explanation:
The Federal Witness Security Program, popularly known as witness protection, is administered by the Department of Justice. This program plays a vital role in safeguarding the lives of witnesses who could be endangered due to their testimony against criminals. The Department of Justice has the mission to enforce the law and ensure the fair administration of justice, which includes running the Witness Security Program. It also works towards protecting whistleblowers through various acts such as the Whistleblower Protection Act of 1989.
Different government agencies have distinct roles; for instance, the FBI is the principal federal law enforcement agency, but it doesn't administer the witness protection program. While the CIA operates primarily overseas and does not oversee witness protection within U.S. borders.