Over the past two decades immigration enforcement has grown exponentially in the United States. We exploit the geographical and temporal variation in a novel index of the intensity of immigration enforcement between 2005 and 2011 to show how the average yearly increase in interior immigration...

Using the 2005-2014 waves of the American Community Survey –a period characterized by the rapid expansion of interior immigration enforcement initiatives across the United States, we evaluate the impact of a tougher policy environment on undocumented immigrants' fertility. We find that a one...