Constitutionalism in Mexico, indeed in Latin America generally, has always posed a problem for interpreters, especially for Anglo-American interpreters. It is true that adherence to a written constitution and to constitutional order has been central to Mexican political liberalism since independence. As a state-building philosophy, liberalism has functioned both as an ideology, in combat with inherited colonial and Hispanic patterns of government, and as an all-embracing myth serving to unify contending self-defined liberal factions. In both instances, liberals fought for, debated, and on occasion were able to implement basic Western constitutional principles, namely, the preservation of individual liberty and legal equality within a representative government whose powers were set out and limited in the articles of a written document. The problem of interpretation arises because of a widespread view that constitutional government in Mexico has been ineffective or, at best, that the struggle to achieve it has been arduous.