The controversies surrounding gun control policies have recently moved to the forefront of public's attention in the United States and elsewhere. Since 2005, eighteen states in the United States have passed laws extending the right to self-defense with no duty to retreat to any place a person...

We examine the effect of increasing the substance use disorder (SUD) treatment rate on reducing violent and property crime rates, based on county-level panels of SUD treatment and crime data between 2001 and 2008 across the United States. To address the potential endogeneity of the SUD treatment...

There is a debate about whether advisory non-binding sentencing guidelines affect the sentences outcomes of individuals convicted in jurisdictions with this sentencing framework. Identifying the impact of sentencing guidelines is a difficult empirical problem because court actors may have...

We evaluate the consequences of prosecuting HIV+ people who expose others to the risk of infection. We show that the effect of aggressive prosecutions on the spread of HIV is a priori ambiguous. Aggressive prosecutions tax risky behavior and thus deter unsafe sex and limit the number of sexual...

We examine the relationship between marijuana use and non-drug related crime using data on arrests from the Arrestee Drug Abuse Monitoring (ADAM) Program and Uniform Crime Reports. There is a positive association between self-reported use at the time of the offence and non-drug related violent,...

We present a simple model of the effects of hate crime legislation. It shows that even if the direct harm to victims of hate crime is the same as for other crimes, because of other differences in the effects it may still be optimal to exert more law-enforcement effort to deter or prevent hate...

How law is interpreted and enforced at a particular historical moment reflects contemporary social concerns and prejudices. This paper investigates the nature of criminal sentencing in mid-nineteenth-century Pennsylvania. It finds that extralegal factors, namely place of conviction and several...