France’s highest constitutional authority delivered a closely watched ruling on 24 July 2026, validating most provisions of a controversial security bill that lengthens the maximum period of administrative detention for certain foreign nationals judged to pose a grave threat to public order. The Council found that extending the cap from 180 to 210 days is proportionate when applied only in exceptional circumstances—namely to foreigners convicted of terrorism offences or serious crimes carrying sentences of at least five years. The new law, championed by Renaissance deputy Charles Rodwell and approved by parliament in June, had been referred to the Council by opposition MPs who argued that such a long deprivation of liberty violated constitutional guarantees. While the judges sided with the government on the core measure, they attached interpretative reservations: any prolongation must be authorised individually by a judge, justified by an up-to-date risk assessment, and remain a last resort after less coercive measures (such as electronic monitoring) have been considered. Beyond detention, the text introduces an “injunction for psychiatric examination” that prefects can impose on individuals exhibiting behaviour linked to radicalisation. The Council allowed the tool but obliged judges to cap any forced appearance in front of a psychiatrist at 12 hours and to inform guardians when the person is a minor or legally protected adult. A parallel provision creating post-sentence “terrorist secure detention” in specialised medical facilities was also green-lighted but will apply only to future convictions. For multinational employers, mobility managers and relocation advisers, the decision is significant: clients or assignees with criminal histories—or whose family members fall into that category—now face a longer horizon of potential confinement while awaiting deportation. The ruling also signals France’s broader shift toward securitisation of immigration, a trend that could translate into stricter scrutiny at prefectures, tighter renewal processes for residence permits, and longer lead times for work-authorisation renewals. Companies should budget additional compliance resources and remind foreign staff of the importance of a clean criminal record in France. Immigration attorneys expect prefectures to update internal guidelines within weeks; meanwhile corporate mobility teams should monitor individual cases in which an employee’s relative is suddenly placed in extended retention, as family-unity waivers may be harder to obtain.
Source: Public Sénat
