Brennan Gardner Rivas is a postdoctoral researcher at the Center for the Study of Guns and Society at Wesleyan University in Middletown, Connecticut. She holds a PhD in history from Texas Christian University. Her research has focused on historical gun and weapon regulations, and she is currently working on a book manuscript tracing the development of gun policy in Texas across the nineteenth century. Brennan’s work has been published in peer-reviewed journals, law reviews, and blogs, and she has been interviewed by journalists and podcasters. Since 2022, she has served as an expert witness in numerous Second Amendment cases across the country.