From 1997 to 2001, he was the US Ambassador to Canada. Ambassador Giffin has been engaged in the practice of law or government service for over thirty years.
He is now the Chair of the Public Policy and Regulation Department of Dentons US LLP. His legal practice involves substantial experience at the state and federal levels in regulatory and administrative litigation in the energy, technology and telecommunications fields; government procurement counseling and litigation; public policy strategic counseling and advocacy; corporate compliance counseling and internal audits; election law; international transactions; trade matters, including trade disputes and policy counseling.
As Chief of Mission at the US Embassy in Ottawa, he managed US interests in the world’s largest bilateral trading relationship in the context of the North American Free Trade Agreement, as well as US collaboration with Canada on global issues in international fora. He received the Superior Honor Award from the Department of State for negotiating a pre-clearance agreement.
From 1975-1979, he was Legislative Director and Chief Counsel to US Senator Sam Nunn in Washington, DC.
Ambassador Giffin is a member of the Council on Foreign Relations and the Trilateral Commission. He is a graduate of Duke University and the Emory University School of Law.