The congressional inquiry into St. Clair's Defeat of 1791 was the first congressional investigation of the executive branch. Investigations are conducted to gather information on the need for future legislation, to test the effectiveness of laws already passed, and to inquire into the qualifications and performance of members and officials of the other branches. Committees may hold hearings, and, if necessary, compel individuals to testify when investigating issues over which it has the power to legislate by issuing subpoenas. Witnesses who refuse to testify may be cited for contempt of Congress, and those who testify falsely may be charged with perjury. Most committee hearings are open to the public (the House and Senate intelligence committees are the exception); important hearings are widely reported in the mass media and transcripts published a few months afterwards. Congress, in the course of studying possible laws and investigating matters, generates an incredible amount of information in various forms, and can be described as a publisher. Indeed, it publishes House and Senate reports and maintains databases which are updated irregularly with publications in a variety of electronic formats.