合衆国長老教会
Between 1937 and 1955, both the Presbyterian Church in the United States of America, and the United Presbyterian Church of North America had been looking to merge with Reformed Churches. The PCUSA had discussed a merger with the Presbyterian Church in the United States (PCUS), as well as with the Episcopal Church. Both denominations had also been in contact with the Reformed Church in America, as well as the Associate Reformed Presbyterian Church.