Gun violence is a problem in America. There are many unresolved questions about what policies would reduce gun violence. I will discuss two attempts at causal inference about gun violence prevention policies that I have worked on, and highlight some ideas about causal inference I have sought to use in this work.

Dylan S. Small is the Class of 1965 Wharton Professor of Statistics at The Wharton School, University of Pennsylvania, where he serves as Associate Scholar of the Center for Clinical Epidemiology and Biostatistics and Senior Fellow of the Leonard Davis Institute of Health Economics. He received his Ph.D. in statistics from Stanford University and is an IMS Medallion Lecturer and ASA Fellow. His research interests include causal inference, design and analysis of observational studies, design and analysis of experiments, and ap- plications of statistics to public health, medicine and public policy. He is the Editor for Observational Studies and Associate Editors for The Annals of Statistics, Journal of the American Statistical Association, Journal of Causal Inference, Journal of Educational and Behavioral Statistics, and The American Statistician.