According to a White House press release, the first member of the Trilateral Commission has entered the Trump administration as the Deputy Assistant to the President for International Economic Affairs, where he will sit on the National Security Council:
Kenneth I.Juster has also served as Chairman of the Advisory Committee of Harvard’s Weatherhead Center for International Affairs, Vice Chairman of the Board of the Asia Foundation, and a member of the Trilateral Commission, the Council on Foreign Relations, and the American Academy of Diplomacy.
https://www.technocracy.news/index.php/2017/02/06/trilateral-commission-member-appointed-to-national-security-council/