57In the first place, it should be recalled that Article 20 TFEU precludes national measures which have the effect of depriving Union citizens of the genuine enjoyment of the substance of the rights conferred by virtue of their status as Union citizens (judgments of 8 March 2011, Ruiz Zambrano, C‑34/09, EU:C:2011:124, paragraph 42, and of 27 February 2020, Subdelegación del Gobierno en Ciudad Real (Spouse of a Union citizen) (C‑836/18, EU:C:2020:119, paragraph 37).
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