23. It shall be the duty of the Doorkeeper to attend the House during its sessions, and to announce all messages. He shall have charge of the main door of the Chamber during the sittings of the House, and shall see that the other doors are properly attended; have general charge and oversight of the assistant doorkeepers; detail such assistant doorkeepers for such general or special duties as the Sergeant at Arms may deem proper; assist the Sergeant at Arms in seeing that the rules relating to admission to the floor are strictly enforced, and shall perform such other duties as the Speaker or the House may order.