Trinidad and Tobago–United States relations include Extradition and Mutual Legal Assistance treaties, which have been in force since 1999. An agreement on Maritime Cooperation was signed in 1996. There are large numbers of U.S. citizens and permanent residents of Trinidadian origin living in the United States (mostly in New York and Florida), which keeps cultural ties strong. About 20,000 U.S. citizens visit Trinidad and Tobago on vacation or for business every year, and more than 4,600 American citizens are residents. Principal U.S. Embassy Officials include: The U.S. Embassy for the Republic of Trinidad and Tobago is located in the Capital-city Port of Spain, on the
Queen of Trinidad and Tobago August 1976, when Trinidad and Tobago became a republic within the Commonwealth with the President of Trinidad and Tobago as head of state. The Queen visited Trinidad and Tobago on 7–9 February 1966 and 1–3 November 1985 as part of Caribbean Commonwealth tours, and 26–28 November 2009 to attend the Commonwealth Heads of Government Meeting 2009. Queen of Trinidad and Tobago Elizabeth II was Queen of Trinidad and Tobago from 1962 to 1976. She was also the monarch of the other Commonwealth realms, including the United Kingdom. The monarch's constitutional roles in Trinidad and Tobago were delegated to a Governor-General,