Drinking water, beaches, a livable climate, clean air, forests, fisheries, and parks are all commons, shared by many users with diffuse and overlapping interests. These public natural resources are susceptible to depletion, overuse, erosion, and extinction; and they are under increasing pressures to become privatized. The Public Trust Doctrine provides a legal basis to guard against privatizing important public resources or commons. As such, it is a critical doctrine to counter the ever-increasing enclosure and privatization of the commons as well as ensure government trustees protect current and future generations. This Article considers separation of powers and statutory interpretation in cases involving attempted privatizations of public...