"Office of the Sergeant at Arms and Doorkeeper The Sergeant at Arms and Doorkeeper, elected by the members, serves as the protocol and chief law enforcement officer and is the principal administrative manager for most support services in the United States Senate."@en . "Congress/Officers/Senate/Sergeant At Arms"@en . "Office of the Sergeant at Arms and Doorkeeper The Sergeant at Arms and Doorkeeper, elected by the members, serves as the protocol and chief law enforcement officer and is the principal administrative manager for most support services in the United States Senate."@en . .