The economic literature on crime and punishment focuses on the trade-off between probability and severity of punishment, and suggests that detection probability and fines are substitutes. In this paper it is shown that, in presence of substantial underdeterrence caused by costly detection and...

This paper extends the optimal law enforcement literature to organized crime. We model the criminal organization as a vertical structure where the principal extracts some rents from the agents through extortion. Depending on the principal's information set, threats may or may not be credible. As...

The relationship between crime and immigration has been a matter of controversy in the US and around the world. This paper investigates empirically the case of Spain. From 1999 to 2009, Spain has had a large wave of immigration from different areas of the globe. At the same time, crime rates...