Senator Sam Ervin investigated the Army's spying as chair of the Judiciary Subcommittee on Constitutional Rights, and Pyle worked as an analyst for his committee, testifying to Congress about his own findings.
The subcommittee was best known in the 1970s as the committee of Sam Ervin, whose investigations and lobbying — together with Frank Church and the Church Commission — led to the founding of the Foreign Intelligence Surveillance Act.
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