February 9, 2026
Michael Stambolis-Ruhstorfer is a sociologist and associate professor of American Studies at the University of Toulouse. He is also a junior member at the Institut Universitaire de France.
His research examines the role of experts in controversial political debates, including climate change, abortion, and gay rights, in the United States and France. His recently published book, By the Power Vested in Me: How Experts Shape Same-Sex Marriage Debates (Columbia University Press 2025) tells the story of the fight over gay family rights in both countries revealing how and why certain experts -- but not others -- obtain the authority to shape public opinion and policy. At a time of soaring public distrust in experts, this book offers new ways to understand the contested political value of expertise and the fallout of its consequences.