Not enough kidneys are donated each year to satisfy the demand from patients who need them. Strong moral and legal norms interfere with market-based solutions. To improve the supply of kidneys without violating these norms, we propose legal reforms that would strengthen the incentive to donate...

A theory of customary international law Jack L. Goldsmith and Eric A. Posner -- A compliance-based theory of international law Andrew T. Guzman -- Do human rights treaties make a difference? Oona A. Hathaway -- Treaty reservations and the economics of Article 21(1) of the Vienna Convention...