His more notable representations include serving as lead U.S. counsel on behalf of the Republic of Chile in the case against former Chilean President Augusto Pinochet. He also has represented the Republic of Argentina, the Republic of Guatemala, the Republic of El Salvador, the Federated Republic of Brazil, the Republic of Ecuador, the Republic of Honduras, St. Kitts and Nevis and instrumentalities of the Kingdom of Spain.
Martinez-Fraga also maintains an active international human rights practice, serving as lead counsel in a landmark case before the Inter-American Commission on Human Rights. He currently serves as a member of the Center for Human Rights Advisory Counsel of the American Bar Association.
Martinez-Fraga graduated from St. John’s College in 1984, summa cum laude, and earned his J.D. from Columbia University School of Law in 1987 where he was a Harlan Fiske Stone Scholar. He also holds Licenciatura (J.D. equivalent) and Magister (L.L.M. equivalent) degrees in private and public international law from the Universidad Complutense de Madrid in addition to a Diploma de Estudios Avanzados in International Law from the same institution. He is admitted to practice in Florida, Washington, D.C., and the Kingdom of Spain.[:]