Background:Social experiments frequently exploit data from administrative records. However, most administrative data systems are designed to track earnings or benefit payments among residents within a single state. When an experimental participant moves across state lines, his entries in the...

The employment rate of black men, and particularly of low-skilled black men, fell precipitously between 1960 and 2000. At the same time, their incarceration rate rose. This paper examines the relation between immigration and these trends in employment and incarceration. Using data from the...