 The Office of Intelligence Support was established in 1977 during the tenure of Treasury Secretary Jacob J. Lew.It succeeded the Office of National Security (ONS), which was set up in 1961 under Treasury Secretary Douglas Dillon to connect the Treasury Department with the work of the National Security Council.ONS's representation of Treasury with the Intelligence Community began under a presidential memorandum in 1971 during the tenure of Treasury Secretary William E. Simon.