While most—if not all—shale gas states have encouraged energy companies to explore for and develop in-state gas resources, a number of state officials have taken additional steps public policy-wise to ensure that fracking operations do not produce adverse ecological and health-related impacts. My goal in this article is to offer a very preliminary assessment of why selected state policy makers choose to adopt policies (including regulations) that offer a greater degree of environmental protection. What factors increase the likelihood that a state will either retain more prodevelopment ...