Comment by belorn
7 hours ago
Multiple citizenship is handled with quite a bit variance over the globe, including those we call democracies. - https://en.wikipedia.org/wiki/Multiple_citizenship
Citizenship obligations for multiple citizenship is quite interesting from a legal perspective. Some citizenship require taxation regardless of where one live, which makes it possible to have a requirement to pay taxation to multiple countries. Military service is also an other interesting aspect. Giving people with multiple citizenship more rights than people with single citizenship would naturally cause problems, and yet you don't want citizens with different rights as that would indeed create different classes of citizenship.
A person can also end up with one citizenship in a country that allows multiple citizenship, and one which does not, and the citizenship of the person then depend on which country is being asked.
Rules about high levels judges is also interesting in the context of dual citizenship. I am surprised for instance that in the US you can be a federal judge apparently while having dual citizenship. Seems like one should have to commit to one country in order to serve at high levels