This book provides a comparative analysis of the structure, operation, and dynamics of Ibero-American federations. It carries out a systematic comparison of Argentinian, Brazilian, Mexican, and Spanish federalism in dialogue with international literature. It offers an analysis along several transversal themes and examines the main features of federal systems: the division of powers; fiscal federalism; bicameralism and intergovernmental relations; and judicial review. The book further explores how Ibero-American federations deal with challenges such as territorial inequality, ethnic and linguistic diversity, corruption, and democracy, and assesses the potential of these federations for laboratory federalism.

An important contribution to comparative federalism literature, this book will be an essential read for scholars and researchers of federalism, political science, democracy, governance, law, and public administration. The insights of the book will also be of practical relevance to policymakers, government officials, and practitioners in federal and decentralizing systems.