By Alexander D. McCourt,  Cassandra K. Crifasi, Elizabeth A. Stuart, Jon S. Vernick, Rose M. C.Kagawa, Garen J. Wintemute and Daniel W. Webster

Objectives. To estimate and compare the effects of state background check policies on firearm-related mortality in 4 US states. Methods. Annual data from 1985 to 2017 were used to examine Maryland and Pennsylvania, which implemented point-of-sale comprehensive background check (CBC)laws for handgun purchasers ; Connecticut. which adopted a handgun purchaser licensing law; and Missouri, which repealed a similar law. Using synthetic control methods, we estimated the effects of these laws on homicide and suicide rates stratified by firearm involvement. Results. There was no consistent relationship between CBC laws and mortality rates. There we re-estimated decreases in firearm homicide (27.8%) and firearm suicide (23.2%–40.5%) rates associated with Connecticut’s law. There were estimated increases in firearm homicide (47.3%), non-firearm homicide (18.1%), and firearm suicide (23.5%)rates associated with Missouri’s repeal. Conclusions. Purchaser licensing laws coupled with CBC requirements were consistently associated with lower firearm homicide and suicide rates, but CBC laws alone were not. Public Health Implications. Our results contribute to a body of research showing tha tCBC laws are not associated with reductions in firearm-related deaths unless they are coupled with handgun purchaser licensing laws. 

American  Journal of   Public Health.2020;110:1546–1552. doi:10.2105/AJPH.2020.305822

By Cassandra K. Crifasi,  Alexander D. McCourt and Daniel W. Webster

There is a major flaw in federal firearm laws in the U.S. and in most states’ laws; prohibited purchasers can acquire firearms from unlicensed private sellers without subjecting themselves to background checks and record-keeping requirements. Violent criminals and traffickers exploit this weakness with fatal consequences. A logical and popular approach to fixing this flaw is to extend background check requirements and procedures used for transfers by licensed firearm dealers to transfers from private unlicensed sellers. Research shows that these so-called comprehensive background check (CBC) laws curtail the diversion of guns for criminal use, but have not resulted in significant reductions in firearm-related deaths. Fortunately, there is good evidence showing that when states augment CBC laws with mandatory licensing or permitting of handgun purchasers, lives are saved by lower rates of firearm-involved homicides6, and suicides. Why are comprehensive background checks more effective when augmented by handgun purchaser licensing? The most likely reasons center on the more direct interface between prospective purchasers and law enforcement and more robust systems for verifying the identity of applicants and their criminal records. In most states with handgun purchaser licensing, applicants must apply in person at a law enforcement agency and be fingerprinted. In some cases, applicants must also provide proof of completion of certified safety training. These procedures may deter individuals who might otherwise make impulsive decisions to acquire a gun to harm others or themselves, and in fact studies have found that the presence of licensing laws is associated with lower levels of gun homicides and suicides. Further, the licensing requirements may also deter straw purchases (when an eligible person buys a firearm for a prohibited person or for someone who does not want their name attached to the transfer).  

Baltimore, MD: The Johns Hopkins Center for Gun Violence Solutions, 2019. 8p.