Rational choice is one of the most influential theoretical directions in contemporary political science. However, rational choice has only been applied to a very limited extent by scholars working in the field of European integration. This book attempts to remedy this lack in the scholarly work by applying a rational choice theoretical model in the analysis of three concrete cases. This book's aim is to investigate and model the system of business-politics relations of the European Union, which have often been dealt with by scholars in a somewhat ad hoc-ocratic and non-theoretical way. Hereby, and most importantly, the book also attempts to further develop rational choice theory as a more general as well as a more useful and policy oriented theory of political science.