45The Court, for its part, has always emphasised that the public policy exception is a derogation from the fundamental principle of freedom of movement for persons which must be interpreted strictly and that its scope cannot be determined unilaterally by the Member States (Rutili, paragraph 27; Bouchereau, paragraph 33; Calfa, paragraph 23; and Joined Cases C-482/01 and C-493/01 Orfanopoulos and Oliveri [2004] ECR I-5257, paragraphs 64 and 65).
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