Judgment_paragraph 91 · European Commission v Hungary (C-78/18)

91However, it is settled case-law of the Court that where the grounds of public policy and public security mentioned in Article 65(1)(b) TFEU allow a derogation from a fundamental freedom provided for by the FEU Treaty they must be interpreted strictly, so that their scope cannot be determined unilaterally by each Member State without any control by the EU institutions. Therefore, those grounds cannot be relied upon unless there is a genuine, present and sufficiently serious threat to a fundamental interest of society (see, to that effect, judgment of 14 March 2000, Église de scientologie, C‑54/99, EU:C:2000:124, paragraph 17).