Protesters now routinely fill the streets when any large, formal meeting dealing with international economic issues takes place. They express concern about the potential social and environmental costs of globalization and want negotiators to address these issues in trade agreements and international organizations. In addition, the debate over whether and how to link labor standards to trade has led to an impasse in American trade policy for much of the past decade and has tied the hands of US trade negotiators. Proposals to "let the market do it" or "let the International Labor Organization...