Since changes in trade openness are typically confounded with other factors, it has been difficult to identify the … labor market consequences of increased international trade. The advent of the United States Interstate Highway System … provides a unique policy experiment, which I use to identify the effect of reducing trade barriers on the relative demand for …

Since changes in trade openness are typically confounded with other factors, it has been difficult to identify the … labor market consequences of increased international trade. The advent of the United States Interstate Highway System … provides a unique policy experiment, which I use to identify the effect of reducing trade barriers on the relative demand for …