In 1930, U.S. Senator Carter Glass (Virginia) introduced the following resolution:
Whereas dial telephones are more difficult to operate than are manual telephones; and
Whereas senators are required since the installation of dial telephones in the Capitol to perform the duties of telephone operators in order to enjoy the benefits of telephone service; and
Whereas dial telephones have failed to expedite telephone service; therefore, be it
Resolved that the sergeant-at-arms of the Senate is authorized and directed to order the Chesepeake & Potomac Telephone Co., to replace with manual telephones, within 30 days after the adoption of this resolution, all dial telephones in the Senate wing of the United States Capitol and in the Senate Office Building.
The resolution passed.
(source: Visions of Technology, edited by Richard Rhodes)