The Consultation on Church Union (COCU) was an effort towards church unity in the United States, that began in 1962 and in 2002 became the Churches Uniting in Christ. It was a significant part of the Christian movement towards Ecumenism. This effort can be seen in the context of the worldwide ecumenical attitude that was manifested in the 1948 formation of the World Council of Churches, the 1950 formation of the National Council of Churches, the 1957 formation of the United Church of Christ, and the formation of the Roman Catholic Pontifical Council for Promoting Christian Unity during the Second Vatican Council (which occurred from 1962 to 1965). The original task of COCU was to negotiate a consensus between its member denominations (originally the Protestant Episcopal Church, the Methodist Church, the United Church of Christ, and the UPCUSA).