This edited volume is a comprehensive examination of the legal framework in which environmental policy is fashioned in the major English-speaking federations - the United States, Canada and Australia. The need for national solutions to environmental problems emerged long after the largest share of governmental power was allotted to states or provinces. This volume attempts to solve the paradox of how a country can have effective laws protecting the environment, vigorously enforced, when legislative and administrative powers are divided between two tiers of government.