54That principle therefore requires all Member State bodies to give full effect to the various EU provisions, and the law of the Member States may not undermine the effect accorded to those various provisions in the territory of those States (see, to that effect, judgments of 26 February 2013, Melloni, C‑399/11, EU:C:2013:107, paragraph 59, and of 4 December 2018, Minister for Justice and Equality and Commissioner of An Garda Síochána, C‑378/17, EU:C:2018:979, point 39).
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