Rue the ROOs: Rules of origin and the gains (or losses) from trade agreements

This article provides three-good, three-country examples of trade in both intermediate inputs and final goods. These show the adverse effects that rules of origin (ROOs) can have, even in a world where every country has a free trade agreement (FTA) with every other country. ROOs may cause ubiquitous FTAs to yield a level of welfare, for everyone, that is worse than if there were no FTAs at all, and all trade were subject to common...