The book provides new empirical insight into the role of organised business interests in processes of regionalization and globalization. Through a synthesis of comparative political economy and international political economy, the book supports the concept of political economy and demonstrates how it transcends the inherent limitations of either CPE or IPE, to form a coherent whole. Utilizing new empirical material within this framework, the book maps the conflict, convergence and influence of organised business interests in the context of regional integration in the Southern Cone of Latin America, using the Mercosur as an example.