It’s hard to argue with facts, but National Rifle Association crusader Wayne LaPierre will no doubt find a way. A new study released by Boston Children’s Hospital on Wednesday found that states with stricter gun legislation present fewer gun-related deaths. The research shows the mortality rate in states with the most gun laws to be 42 percent lower than states with the the fewest gun laws. Eric Fleegler, the study’s lead investigator, hopes the new information will encourage lawmakers to pass gun reform. “Our research gives clear evidence that laws have a role in preventing firearms deaths,” he said. Critics of the research argue that a few key factors—such as gun-ownership rates—were not taken into consideration when conducting this study.