sentences:  The USMS as it stands today was established in 1969 to provide guidance and assistance to marshals throughout the federal judicial districts.USMS is an agency of the United States executive branch reporting to the United States Attorney General, but serves as the enforcement arm of the United States federal courts to ensure the effective operation of the judiciary and integrity of the Constitution.The Marshals Service is the primary agency for fugitive operations, the protection of officers of the federal judiciary, the management of criminal assets, the operation of the United States Federal Witness Protection Program and the Justice Prisoner and Alien Transportation System, the execution of federal arrest warrants, and the protection of senior government officials through the Office of Protective Operations.