216The scope of the requirements relating to the maintenance of law and order or national security cannot therefore be determined unilaterally by each Member State, without any oversight by the institutions of the European Union. It is accordingly for the Member State which seeks to take advantage of Article 72 TFEU to prove that it is necessary to have recourse to that derogation in order to exercise its responsibilities in terms of the maintenance of law and order and the safeguarding of internal security (judgment of 2 April 2020, Commission v Poland, Hungary and the Czech Republic (Temporary mechanism for the relocation of applicants for international protection), C‑715/17, C‑718/17 and C‑719/17, EU:C:2020:257, paragraphs 146 and 147).
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