Nuncio
A nuncio is appointed by and represents the Holy See, and is the head of the diplomatic mission, called an apostolic nunciature, which is the equivalent of an embassy.Since such envoys are accredited to the Holy See as such and not to the State of Vatican City, the term "nuncio" (versus "ambassador") emphasizes the unique nature of the diplomatic mission.[2] The 1983 Code of Canon Law claims the "innate right" to send and receive delegates independent from interference of non-ecclesiastical civil power.Archbishop Pio Laghi, for example, was first apostolic delegate, then pro-nuncio, to the United States during the Jimmy Carter, Ronald Reagan, and George H. W. Bush presidencies.Holy See representatives called permanent observers are accredited to several international organisations, including offices or agencies of the United Nations, and other organizations either specialized in their mission or regional or both.