Department of State had indicated that the State Department's 75,547 employees included 13,855 foreign service officers; 49,734 locally employed staff, whose duties are primarily serving overseas; and 10,171 predominantly domestic civil service employees. Other agencies Since the 1996 reorganization, the Administrator of the US Agency for International Development (USAID), while leading an independent agency, also reports to the secretary of state, as does the US ambassador to the United Nations. Vacancies As of November 2018, people nominated to ambassadorships to 41 countries had not yet been confirmed by the Senate, and no one had yet been nominated to ambassadorships to 18 additional countries (including Saudi Arabia, Turkey, Mexico, Egypt, Jordan, South Africa, and Singapore). In November 2019, a quarter of US embassies around the world—including Japan, Russia and Canada—still had no ambassador. Headquarters From 1790 to 1800, the State Department was headquartered in Philadelphia, the national capital at the time. It occupied a building at Church and Fifth Street. In 1800, it moved from Philadelphia to Washington, D.C., where it briefly occupied the Treasury Building and then the Seven Buildings at 19th Street and Pennsylvania Avenue. The State Department moved several times throughout the capital in the ensuing decades, including six buildings in September 1800; the War Office Building west of the White House the following May; the Treasury Building once more from September 1819 to November 1866; the Washington City Orphan Home from November 1866 to July 1875; and the State, War, and Navy Building in 1875. Since May 1947, the State Department has been based in the Harry S. Truman Building, which originally was intended to house the Department of Defense; it has since undergone several expansions and renovations, most recently in 2016. Previously known as the "Main State Building", in September 2000 it was renamed in honor of President Harry S. Truman, who was a major proponent of internationalism and diplomacy. As the DOS is located in the Foggy Bottom neighborhood of Washington, it is sometimes metonymically referred to as "Foggy Bottom". Programs Professional Fellows The US Department of State has in the recent years rolled out Professional Exchange Fellows who have risen to professional ranks in their lives and are chosen by the US Embassies worldwide to be a professional fellows of the State Department spending time in the United States and interacting with their American colleagues, leadership and counterparts. Fulbright Program The Fulbright Program, including