The Court held that it is not contrary to EU law for Member States to withdraw citizenship obtained by deception, even if the effect is to also withdraw citizenship of the Union, so long as the decision observes the principle of proportionality.
The applicant is a Palestinian from Syria, who holds a refugee status in Hungary. He also applied for a recognition as a stateless person in Luxembourg. The Court found that the 1954 Statelessness Convention was conceived as complementary to the Refugee Convention. Since the applicant as a refugee in Hungary received at least as good a protection as a Palestinian in an UNRWA protected territory, the latter category being explicitly excluded from the protection scope of the 1954 Convention, the applicant did not qualify for the recognition of a statelessness status in Luxembourg.
The applicant received asylum status as a stateless Palestinian, but his request to register his statelessness in the municipal civil records was rejected due to lack of evidence. He has an original UNRWA document and an ID from Lebanon, but they were considered insufficient proof of identity as well as of statelessness. The applicant complained that inability to affirm his statelessness violates his identity rights under article 8 ECHR, as well as his rights as a stateless person under EU law, both of which arguments didn't succeed.