Embassy of the United States to the Holy See to the Holy See, previously located on Aventine Hill, moved to new headquarters in September 2015 in a separate building on the same compound as the United States Embassy Rome. Embassy of the United States to the Holy See The Embassy of the United States of America to the Holy See (or Embassy Vatican for short) is the diplomatic mission of United States of America to the Holy See, a term referring to the central government and universal reach of the Roman Catholic Church. The current embassy moved to new headquarters in September 2015 in a separate building on the
Embassy of the United States to the Holy See in 1953. In 1994, the U.S. government acquired the property as the new chancery for embassy. On October 16, 2017, Callista L. Gingrich was confirmed by the U.S. Senate as the next Ambassador to the Holy See. The embassy is a part of the "Tri-Mission Community" in Rome, the other two being the Embassy of the United States, Rome and the United States Mission to the U.N. Agencies in Rome. Formal diplomatic relations with the Holy See were established in 1984 by President Ronald Reagan and Pope John Paul II. The mission works in partnership with the Holy See on