Author's Forum—Arbitrary Lines

M. Nolan Gray is a professional city planner and an expert in urban land-use regulation. He is currently completing a Ph.D. in urban planning at the University of California, Los Angeles. Gray previously worked on the front lines of zoning as a planner in New York City. He now serves as an Affiliated Scholar with the Mercatus Center at George Mason University, where he advises state and local policymakers on land-use policy.