Implementing the Agreement: Partisan Politics and WTO Dispute Settlement

This essay investigates the role of WTO Member States’ political institutions in their decision to comply with adverse rulings. In the end, implementation of these rulings is a political act that Member States must undertake on their own. The decision to comply will thus be affected by domestic political pressures and institutions, including who wins and who loses if the decision is implemented, the locus of decision-making necessary to comply, and the overall structure of government. In this chapter, we explore the impact that domestic partisan preferences have on compliance rates among OECD countries. We construct a formal model of WTO implementation, predicting that when left-leaning parties, those who tend to favor protection for domestic labor and markets, control government, compliance rates should tend to fall. In contrast, right-leaning governments, those who weigh highly market access and returns to capital, should be more willing to comply with adverse WTO rulings. We test these hypotheses using data from WTO trade disputes involving twenty-five advanced industrialized countries and the European Union from 1970 to 2000, and find consistent support for our theory.