Secretary of Transportation Pete Buttigieg’s proposal to make the United States a “world leader” in high‐​speed rail would add more than $4 trillion to the federal debt for construction of new rail lines plus tens of billions of dollars of annual deficit spending to subsidize operating...

This paper estimates establishment-level employment effects of investment grants in one of the German Federal States receiving the most support. We analyze general treatment effects, as well as the influence of heterogeneity in the characteristics and economic environment of the establishment on...

Researchers are often interested in estimating the causal effect of some treatment on individual criminality. For example, two recent relatively prominent papers have attempted to estimate the respective direct effects of marriage and gang participation on individual criminal activity. One...