translate English to French: The first involves conducting in-depth reviews of CSIS activities to ensure that they comply with the Service's governing legislation, the CSIS Act, and with the various policy instruments that flow from it.
Le premier prend la forme d'études approfondies destinées à vérifier si les activités du Service sont conformes à sa loi constitutive, la Loi sur le SCRS, et aux divers outils d'intervention qui en découlent.