The September 14-16, 1977 Congress of St. Louis was an international gathering of nearly 2,000 Anglicans in St. Louis, Missouri, united in their rejection of theological changes introduced by the Anglican Church of Canada and by the Episcopal Church in the United States of America (then known as Protestant Episcopal Church USA) in its General Convention of 1976. Anglicans who attended this congress felt that these changes amounted to foundational alterations in the American and Canadian provinces of the Anglican Communion and meant that they had "departed from Christ's One, Holy, Catholic and Apostolic Church." Theological liberalism, revisions to the Book of Common Prayer, and the ordination of women priests were not the only reasons for the split, but they were seen by these churches as