Glenn Cohen’s Patients with Passports: Medical Tourism, Law, and Ethics offers a thorough examination of the growing practice of medical tourism, the legal regulations governing it, and the many ethical issues it raises for policy-makers, health care providers, and prospective medical tourists. Demonstrating mastery of the relevant literatures in the social sciences, law, ethics, and political philosophy, Cohen provides a comprehensive overview of the current practice of medical tourism, and offers well-argued, sensible policy advice to guide its reform. Cohen’s book is a significant achievement of interdisciplinary scholarship and is essential reading for scholars and policy-makers.