Christians in Switzerland are split more or less evenly between the Catholic Church, which is the largest single church, and the Protestant Federation, which groups the Reformed churches of the cantons, and a few other churches. The Methodists are part of the United Methodist Church. Through immigration, Orthodox congregations have come into being, belonging for example to the Serbian Orthodox Church, the Ecumenical Patriarchate, and others. The Catholics, Protestants, Orthodox and the Old-Catholics come together in a Council of Christian Churches. There are various lively Pentecostal and Evangelical churches, and the Evangelical Alliance of Switzerland is affiliated with the WEA.