Art. 23 PILA from 2022
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Art. 23 IV. Multiple citizenships
1 If a person has one or more foreign citizenships in addition to Swiss citizenship, jurisdiction based on citizenship is determined by reference to Swiss citizenship only.
2 If a person has more than one citizenship, the citizenship of the state with which such person is most closely connected is exclusively relevant in determining the applicable law, unless this Act provides otherwise.
3 If recognition of a foreign decision in Switzerland depends on a person’s citizenship, it is sufficient to take into consideration one of such person’s citizenships.
Es besteht kein Anspruch auf Aktualität und Vollständigkeit/Richtigkeit.