I received representatives from the Trilateral Commission. After one of the conversations, Giscard d’Estaing, who was the speaker, addressed me and said in a very meaningful way: “Be ready to deal with a united federal state of Western Europe.” By saying that, I think, he meant that when European integration reaches a qualitatively new level in 1992 it will be accompanied by a deep reorganization of political structures that will reach the federal level as well.

https://nsarchive2.gwu.edu/NSAEBB/NSAEBB298/Document%2010.pdf