We exploit exogenous variation in legal status following the January 2007 European Union enlargement to estimate its effect on immigrant crime. We difference out unobserved time-varying factors by (i) comparing recidivism rates of immigrants from the "new" and "candidate" member countries; and...

We present a theoretical model of immigration and crime in which legal status raises the opportunity cost of crime, illegal immigrants may be deported, and there is endogenous selection into legal status. We estimate the model exploiting administrative records on the universe of prison inmates...

Beneficiaries of Social Security face restrictions on how much they can earn without incurring the earnings test (ET). In 2000, President Clinton eliminated the ET between ages 65 and 70. In this paper, I evaluate how this removal impacts the long-term finances of the Trust Fund. I find that...

More policing reduces crime but little is known about the mechanism. Does policing deter crime by reducing its attractiveness, or because it leads to additional arrests of recurrent criminals? This paper provides evidence of a direct link between policing and arrests. During shift changes a...

More policing reduces crime but little is known about the mechanism. Does policing deter crime by reducing its attractiveness, or because it leads to additional arrests of recurrent criminals? This paper provides evidence of a direct link between policing and arrests. During shift changes a...

We estimate the "incapacitation effect" on crime using variation in Italian prison population driven by eight collective pardons passed between 1962 and 1990. The prison releases are sudden (within one day), very large (up to 35 percent of the entire prison population), and happen nationwide....

Olivier Marie explains the value of an economic approach to the analysis, design and evaluation of crime-fighting policies.

Using declassified Federal Bureau of Narcotics records on 800 US Mafia members active in the 1950s and 1960s, and on their connections within the organized crime network, I estimate network effects on gangsters' economic status. Lacking information on criminal proceeds, I measure economic status...