UNITED NATIONS, Sep 19 (IPS) – When the United Nations decided to locate its 39-storeyed Secretariat in New York city, the United States, as host nation, signed a “headquarters agreement” in 1947 not only ensuring diplomatic immunity to foreign diplomats but also pledging to facilitate the day-to-day activities of member states without any hindrance, including the issuance of US visas to enter the country.