Salim Abdool Karim is a professor at the University of KwaZulu-Natal and Columbia University, director of the Centre for the AIDS Programme of Research in South Africa, and a member of the Journal’s editorial board. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. A.I. Ko and Others. Threatening the Future of Global Health — NIH Policy Changes on International Research Collaborations. N Engl J Med 2023;389:869-871.