This month marks 20 years since the opening of a U.S. prison at Guantánamo Bay, despite repeated U.S. presidential promises to close it. We talk to Ramzi Kassem, a professor of law at the City University of New York, who has also defended 14 detainees at Guantanamo; and Carol Rosenberg, a military affairs reporter for the New York Times and author of Guantánamo Bay: The Pentagon's Alcatraz of the Caribbean.