Competition between companies tends to be beneficial for the general public, but is this also true for the competition between states in a world with global financial markets, low transport costs, and increasing migration? In this book, Sinn provides a solid economic analysis of the competitive forces at work and addresses how they affect public goods provision, income redistribution, environmental policy, safety standards, banking regulation and even competition policy itself. Identifying the deficiencies of the competition between systems, the author develops a number of correcting policy measures ranging from specific harmonization proposals to rules that would help make competition work.