In the 1970s several Congressional investigations discovered there had been a disturbing pattern of misconduct by the CIA in regard to the Warren Commission’s investigation of the JFK assassination. The Agency had engaged in a cover-up by suppressing information it should have disclosed to the Commission, and in still other ways it had impeded the Commission’s investigation.
CIA documents subsequently released under the Freedom of Information Act or the 1992 JFK Assassination Records Act expand our awareness of the Agency’s misconduct.
Wilkes, Donald E. Jr., "The CIA and the JFK Assassination, Pt. 2" (2015). Popular Media. 236.