Special and Differential Treatment for Developing Countries (SDT) constitutes a central feature of the GATT/WTO system. Its formal goal is to foster export-led growth in developing countries. Its theoretical foundations and empirical support are, however, weak at best. In particular, SDT...

We study how a preferential trade agreement (PTA) affects international sourcing decisions, aggregate productivity and welfare under incomplete contracting and endogenous matching. Contract incompleteness implies underinvestment. That inefficiency is mitigated by a PTA, because the agreement...

We develop a new framework to study the welfare consequences of preferential trade agreements (PTAs) under global sourcing, incomplete contracts and endogenous matching. We uncover several new channels through which PTAs affect global welfare. There are effects stemmingfrom intensive margin...