We develop an empirical framework to assess the importance of trade and technical change on the wages of production and nonproduction workers. Trade is measured by the foreign outsourcing of intermediate inputs, while technical change is measured by the shift towards high-technology capital such...

In this paper, I selectively review recent literature on illegal migration from Mexico to the United States. I begin by discussing methods for estimating stocks and flows of illegal migrants. While there is uncertainty about the size of the unauthorized population, new data sources make it...

We develop a monopolistic-competition model of trade with many industries to examine how home-market effects vary with industry characteristics. Industries with high transport costs and more differentiated products tend to be more concentrated in large countries than industries with low...