Eugenio Weigend Vargas is a postdoctoral research fellow at the University of Michigan's Institute for Firearm Injury Prevention. His research has focused on preventing arms trafficking and gun violence in the United States and Mexico. 

Weigend has provided testimonies before the Inter-American Commission on Human Rights as well as the Inter-American Convention Against Illicit Firearms Trafficking in the Americas and has been invited to speak at conferences at Oxford University, Georgetown University, Washington University, Colegio de Mexico, and Universidad Autonoma Nacional de México.

Prior to joining the University of Michigan, Weigend was the research director for gun violence prevention at the Center for American Progress, where he published numerous articles, books, reports, fact sheets, and issue briefs advocating for measures that strengthen gun laws in the United States at the state and federal levels.

Weigend has been a visiting scholar at Georgetown University and the University of Texas in El Paso. He holds a master’s degree in public affairs from Brown University and a doctorate from Instituto Tecnológico y de Estudios Superiores de Monterrey