This book analyzes the history and structure of the intricate system of informal negotiation and secret dealings between the Mexican government and big businessmen in the process of Mexican industrialization between 1936 and 1984. In order to do this, State and Business Groups in Mexico develops a new theory about the operation of formal and informal political institutions, which is fully applicable to every other region of the world. This book is not only an essential tool for the expert in the study of social, political and economic institutions, but also a required reading for all those - experts or not - interested in learning for the first time the exact features of the secret webs that even today determine policymaking in Mexico.