The fragmentation of production chains across borders has been one of the most distinctive features of globalization since the 1980s. Nonetheless, our understanding of its implications for trade theory and policy is only in its infancy. We suggest that trade in value added should follow theories...

Using NAFTA's effect on Mexico's exports as a natural experiment, this paper conducts an empirical analysis on the explanatory power of the two strands of heterogeneous firms trade models: the heterogeneous firms trade (HFT) model and the quality heterogeneous firms trade (QHFT) model. The paper...