Over 5,000 European citizens joined the ranks of the so-called Islamic State of Iraq and Syria (ISIS) in the early 2010s. Since the rollback of the terrorist organization in 2016, European Union (EU) member states have had to decide whether or not to repatriate these individuals who were made prisoners mainly by Iraqi, or Kurdish authorities. France, the EU country that saw the highest number of its citizens join ISIS was also directly targeted by terrorist attacks orchestrated by ISIS returnees. From 2017 to 2019, it relied heavily on a non-repatriation approach, a measure which was welcomed by the general public but criticized by human rights and legal experts. However, in 2019, the withdrawal of US troops and the Turkish offensive in North-East Syria have further destabilized the region and pushed the French government to adapt its strategy. This study aims at understanding how the Macron administration legitimized the measures it implemented to tackle the ISIS returnees phenomenon and whether its approach has evolved. Through critical discourse analysis (CDA) and by drawing from the securitization theory, this research investigates the official communications of the French government between 2017 and 2020. The data will reveal that the “low-probability, high impact” threat posed by ISIS returnees has been over-securitized. This might lead an over-perception of this threat, which could threaten the social cohesion of the country and make measures bargaining with human rights and the rule of law acceptable for the public opinion. While many contributions have analyzed the policies and laws related to the issue of ISIS returnees in the EU, few have investigated how states responded to it in their official communications. With a focus on the EU country that has been the most concerned by this phenomenon, this study will help to bridge this gap in knowledge and will have broader implications for discursive practices regarding ISIS returnees and terrorism in Europe and the West.