Patrick Weil is a senior research fellow at the French National Research Center, University of Paris 1, and a visiting professor of law at Yale Law School. His work focuses on comparative immigration, citizenship, and church–state law and policy. His most recent books include De la Laïcité en France (Grasset, 2021) and Le Président est-il devenu fou? Le diplomate, le psychanalyste et le Chef de l’Etat (Grasset, 2022).