He is the author of several books and Congressional reports on military intelligence and constitutional rights, and has testified numerous times before the U.S. Congress on issues of deportation and extradition.
While Pyle went on to interview more than 120 anonymous soldiers to document the practices, he himself came under attack in "bureaucratic retaliation" that included a spot on President Richard M. Nixon's "Enemies List."
[5] 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 (1971-1974).
Ervin continued to investigate government activities; together with the Church Committee inquiries, these Congressional studies led to the drafting of the Foreign Intelligence Surveillance Act.
[1] In 2004, Pyle was elected chairman of the board of the Petra Foundation, a national organization that recognizes and assists "unsung heroes" who make extraordinary contributions to social justice.