 He was a member of the Ecumenical Committee from 1970 to 1973 and its president from 1973 to 1978.McNaughton served as president of the Committee for Catechesis from 1978 to 1984 and as a member of the Episcopal Commission for Clergy and Religious from 1978 to 2002.Pope John Paul II accepted Bishop McNaughton's resignation as Bishop of Incheon on April 25, 2002.