He is a senior research fellow at CNRS, at the Centre for the social history of the 20th century [fr] at the University of Paris 1.

He received his master's degree in public law from ESSEC business school before obtaining his doctorate in political science.

: Histoire de la nationalité française de la Révolution à nos jours (Grasset 2002) In Le Monde, Weil says "Edward Snowden can ask the competent authorities for France’s protection "to obtain constitutional asylum, a specific French protection for "freedom fighters".

"Firstly, the French office of refugees and stateless (OFPRA) who is in charge of all the demands for asylum, will have to study his application and make a decision.

If this office reject Snowden’s application, the national court of asylum right and the French council of State would decide on its case in first and then last appeal" (Le Monde, June 5, 2014).