During the 1975 Church Committee hearings, the United States Department of Justice (DOJ) had investigated the legal culpability of various intelligence agencies. Bamford submitted a FOIA request for resulting documents, and received most of their report on the NSA. The DOJ did not inform the NSA of the release because the investigation was ongoing, and the NSA was a possible target. The released papers were later to become the subject of threatened litigation, and their release prompted eventual rule changes that allowed for document reclassification. According to the NSA's history, "the document, with some Justice redactions, contained a good deal of information about the NSA-GCHQ Communications Headquarters, a British intelligence agency relationship, and served as the basis for Bamford's information on Second Party issues issues regarding outside agencies with which the NSA had partnered." The NSA history dryly notes that "GCHQ was not amused" about the disclosure.