This book adds to the environmental politics and policy literature by conducting a comprehensive investigation of business influence in agenda building and environmental policymaking in the United States over time. As part of this investigation, the author presents an analysis of six cases in which private firms were involved in disputes concerning pollution control and natural resource management. In addition to determining how much business interests influence environmental and natural resource policy, the book tests possible explanations for their level of success in shaping the government's agenda and policy. The study offers a general conceptual framework for analyzing the influence of corporate America over environmental policymaking. The research then explores how much firms have influenced Congress, the U.S. Environmental Protection Agency and certain natural resource agencies, and the courts on environmental and natural issues since the beginning of the environmental movement in 1970. No other study has examined the ability of business to influence environmental policy in all three branches of government and in such detail.