In January 2004, Pope John Paul II named Gregory John Mansour third Bishop of the Eparchy of Saint Maron of Brooklyn.Bishop Mansour has served on the United States Conference of Catholic Bishop’s Pro Life, Catechesis and Evangelization, and Laity and family Committees. He serve as Catholic co chair of the Catholic-Oriental Orthodox Dialogue.In addition to serving as member of Christian Arab and Middle Eastern Churches Together (CAMECT), he is a past member of the Board of Trustee for The Catholic University of America and past chair of Catholic Relief Services.He also serves on the board for Aid to the Church in Need, Caritas Lebanon and Telelumiere/Noursat, and In Defense of Christians (IDC) to support and advocate for Christians of the Middle East.