translate English to French: I believe they should retain their essential powers in this area without any undue imposition or regulation by the Agency, which should take particular care to comply with the principle of subsidiarity.
Je pense qu’ils devraient conserver leurs pouvoirs essentiels dans ce domaine, sans imposition ni régulation indue par l’agence, qui doit particulièrement veiller à se conformer au principe de subsidiarité.