Beyond Constitutionalism: The Pluralist Structure of Postnational Law

Abstract

This book traces a fundamental transformation in law—the turn towards ‘postnational law’—which reflects the increasing enmeshment of national, regional, and international law and calls into question central legitimating principles of the different layers. Two fundamental approaches to the structure of this new legal order stand out and form the focus of this book: constitutionalism and pluralism. Postnational constitutionalism embodies the hope of integrating the order through an overarching legal framework that would tame politics by defining relations and institutionalizing key values. Yet such a constitutionalist order would require too massive a transformation of postnational institutions and society, and thinner approaches, widespread in the literature and more realistic, would sell the constitutionalist promise short. This book proposes instead to conceptualize and develop the postnational order in a pluralist vein, characterized by a multiplicity of legal sub-orders, not connected through an overarching frame but interacting in often political modes. Many areas of regional and global governance can be understood in such terms, as demonstrated here for the European human rights regime, the UN sanctions regime in its tension with human rights, and the regime complex of international trade, environment, and food safety. The pluralism on display in these examples also holds normative appeal. By reflecting diverging views on the right scope of the polity, it respects individuals’ autonomy and their right to shape their political order, thus furthering democratic values. By leaving relations between different layers of law unsettled, it allows for contestation and adaptation which helps to stabilize postnational governance and remedy power imbalances in its initial design. In the highly diverse and contested space of the postnational, breaking with domestic political traditions and going ‘beyond constitutionalism’ towards a pluralist order may be the better option.