32Accordingly, the situation of citizens of the Union who, like the applicants in the main proceedings, are nationals of one Member State only and who, by losing that nationality, are faced with losing the status conferred by Article 20 TFEU and the rights attaching thereto falls, by reason of its nature and its consequences, within the ambit of EU law. Thus, the Member States must, when exercising their powers in the sphere of nationality, have due regard to EU law (judgment of 2 March 2010, Rottmann, C‑135/08, EU:C:2010:104, paragraphs 42 and 45).
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