BCCI started with the Saudis trying to gain leverage over U.S. foreign policy during the Carter administration, but they got exposed under Reagan during Iran-Contra, so the Reagan administration took the heat for it. Clark Clifford was very guilty but protected by his friends, as were various Georgia Democrats linked to Carter. Kissinger, Scowcroft, Eagleburger, and the G.H.W. Bush administration were also entangled in the BNL thing.
Interesting timing of this info; it comes out a few days after Robert Trump passes away.