He was also deputy member of the Executive Committee of the International Confederation of Free Trade Unions, and was a member of the U.S. delegation to the Belgrade and Madrid sessions of the Conference on Security and Cooperation in Europe.
As a prominent figure, he held a dual position as a deputy member of the Executive Committee of the International Confederation of Free Trade Unions, and played a key role in representing the United States at the European Security Conference sessions in Belgrade and Madrid.