This article analyzes differences between United States and West German export controls. It shows that United States controls are more extensive and stricter than controls in West Germany. Three possible explanations for this variation in policy are considered. First, these two states differ in regard to their positions in the international system and in their choice of economic strategies. Second, the extent of domestic political support for strict export control policies varies between the two countries. Finally, West Germany lacks the institutional framework to adequately control its foreign trade. The evidence presented corroborates the first two alternatives, while institutional explanations receive relatively little support. The article then discusses the historical development of United States and West German export control policies and institutions. The analysis shows evidence of both change and stability. More specifically, the article questions the argument that institutions in foreign economic policy, once established, persist and resist change, instead of adapting to environmental changes. Several hypotheses are considered to explain why in the area of export controls changes in policy, and to some extent institutions, occurred more frequently in West Germany than in the United States.