they note that the White House is set much farther back from the street than numerous other sensitive federal buildings are. Prior to its inclusion within the fenced compound that now includes the Old Executive Office Building to the west and the Treasury Building to the east, this sidewalk served as a queuing area for the daily public tours of the White House. These tours were suspended in the wake of the September 11 attacks. In September 2003, they resumed on a limited basis for groups making prior arrangements through their Congressional representatives or embassies in Washington for foreign nationals and submitting to background checks, but the White House remained closed to the public. Due to budget constraints, White House tours were suspended for most of 2013 due to sequestration. The White House reopened to the public in November 2013. Protection The White House Complex is protected by the United States Secret Service and the United States Park Police. During the 2005 presidential inauguration, NASAMS (Norwegian Advanced Surface-to-Air Missile System) units were used to patrol the airspace over Washington, D.C. The same units have since been used to protect the president and all airspace around the White House, which is strictly prohibited to aircraft. See also Architecture of Washington, D.C. Art in the White House Camp David Pedro Casanave Germantown White House Graphics and Calligraphy Office List of largest houses in the United States List of National Historic Landmarks in Washington, D.C. List of residences of presidents of the United States Number One Observatory Circle, residence of the vice president Replicas of the White House Reported White House ghosts White House Acquisition Trust White House Chief Calligrapher White House Chief Floral Designer White House Christmas tree White House Communications Agency White House Endowment Trust White House Executive Chef White House Fellows White House History White House Social Secretary :Category:Rooms in the White House White House COVID-19 outbreak Notes References Further reading Abbott, James A. A Frenchman in Camelot: The Decoration of the Kennedy White House by Stéphane Boudin. Boscobel Restoration Inc.: 1995. . Abbott, James A. Jansen. Acanthus Press: 2006. . Clinton, Hillary Rodham. An Invitation to the White House: At Home with History. Simon & Schuster: 2000. . Garrett, Wendell. Our Changing White House. Northeastern University Press: 1995. . Guidas, John. The White House: Resources for Research at the Library of Congress. Library of Congress, 1992. Huchet de Quénetain,