Additional documents were revealed in the course of separate lawsuits filed against the FBI by NBC correspondent Carl Stern, the Socialist Workers Party, and a number of other groups. In 1976 the Select Committee to Study Governmental Operations with Respect to Intelligence Activities of the United States Senate, commonly referred to as the "Church Committee" after its chairman, Senator Frank Church of Idaho, launched a major investigation of the FBI and COINTELPRO. Many released documents have been partly or entirely redacted.