Book excerpt: The trade policies addressed in this book have far-reaching effects on the world's increasingly interdependent economies, but until now little research has been devoted to them. This volume represents the first systematic effort to analyze specific U.S. trade policies, particularly nontariff measures. It provides a better understanding of how trade policies operate, how effective they are, and what their costs and benefits are to trading nations. The contributors chart the history of U.S. trade policy since World War II, analyze industry-specific trade barriers, and discuss the effects of tariff preferences and export-promoting policies such as export credits and domestic international sales corporations (DISCs). The final section of essays examines the worldwide impact of import policies, pointing out subtleties in industry-specific policies and providing insight into the levels of protection in developing countries. The contributors blend state-of-the-art economics with language that is accessible to the business community, economists, and policymakers. Commentaries accompany each paper.