How important to welfare and growth in developing countries are restraints on foreign providers of producer services? Limiting such services not only may limit growth but may hurt some of the very people - domestic skilled workers in such service sectors - those restraints are designed to protect

The structure of a multinational firm, that is how its affiliates relate to one another, is critical for understanding where multinationals locate, how policy affects them, and their resilience to localized shocks. Here, we review the two main structures: horizontal investments which replicate...