Rule XXXIII of the Standing Rules of the United States Senate, established by the Senate Committee on Rules and Administration, governs usage of the United States Senate Chamber, and regulates the behavior of those within it.
Text of Rule XXXIII 
- 1. The Senate Chamber shall not be granted for any other purpose than for the use of the Senate; no smoking shall be permitted at any time on the floor of the Senate, or lighted cigars, cigarettes, or pipes be brought into the Chamber.
- 2. It shall be the duty of the Committee on Rules and Administration to make all rules and regulations respecting such parts of the Capitol, its passages and galleries, including the restaurant and the Senate Office Buildings, as are or may be set apart for the use of the Senate and its officers, to be enforced under the direction of the Presiding Officer. The Committee shall make such regulations respecting the reporters' galleries of the Senate, together with the adjoining rooms and facilities, as will confine their occupancy and use to bona fide reporters of newspapers and periodicals, and of news or press associations for daily news dissemination through radio, television, wires, and cables, and similar media of transmission. These regulations shall so provide for the use of such space and facilities as fairly to distribute their use to all such media of news dissemination.
External links 
Standing Rules of the United States Senate