William McIlhenny is a visiting senior fellow at the German Marshall Fund of the United States. Previously, he was a senior policy advisor at the US Department of State, served on the Secretary of State’s Policy Planning Staff, and on the National Security Council staff.

During his diplomatic career spanning three decades, he held a variety of posts at US Missions in Europe and Latin America and represented the United States at UNESCO in Paris.   

He is a periodic commentator on US relations with Latin America and wider Atlantic integration. A member of the Pacific Council on International Policy, McIlhenny holds the Order of Merit of the Italian Republic and other civic and government awards and honors. He is a graduate of Georgetown University’s School of Foreign Service, held an American Political Science Association fellowship at SAIS, and has completed other studies at the University of Tel Aviv.