Based in Washington, D.C., Muse has represented a broad range of clients; he has written widely and testified on U.S. laws relating to Cuba before the U.S. Congress; the Canadian House of Commons; the U.S. International Trade Commission and the European Parliament. Among his many publications are the chapter on U.S.-Cuba sanctions in the book, Cuba: A Legal Guide to Business (Thomson Reuters); the chapter on the Cuban embargo in the multi-volume encyclopedia, Cuba; U.S. Presidential Action on Cuba: The New Normalization? (Council of the Americas, Americas Quarterly 2014); The Nationality of Claims Principle of Public International Law and the Helms-Burton Act, (University of California, Hastings International and Comparative Law Review); A Public International Law Critique of the Extraterritorial Jurisdiction of the Helms-Burton Act, (George Washington University, Journal of International Law and Economics). He has spoken at many universities about U.S. law and policy regarding Cuba, including Columbia, Georgetown, Harvard, Fordham, and the Universities of California, Georgia, North Carolina and Havana. Before beginning legal studies at Georgetown and practicing in Washington, D.C., he was called to the bar of England and Wales as a barrister-at-law (Middle Temple).