In 1992, Abune Mathias returned to Ethiopia following the fall of the Derg and of Patriarch Abuna Merkorios to retake his seat in the Holy Synod. Following the enthronement of Patriarch Abune Paulos, Abune Mathias was named Archbishop of North America. Later, the Archdiocese was divided and Abune Mattias served as Archbishop of the United States, when Canada became a separate archdiocese.