Swedish citizenship laws are based on the principle of descent which means that citizenship is acquired at birth if one parent is a Swedish citizen. Another basic principle is preventing the occurrence of statelessness. The earlier principle of preventing the occurrence of dual citizenship has been abandoned and the law fully accepts dual citizenship.
On 1 July 2001 Sweden acquired a new Citizenship Act. Among other things, the Act means that dual citizenship is possible. Thus, anyone acquiring Swedish citizenship can keep his/her previous citizenship if the law of that country so permits. Swedish citizens who acquire another citizenship can also keep their Swedish citizenship if the other countrys laws so permit. The new law makes it easier for children and young people to become Swedish citizens.
There are plenty of European models of citizenship that a Welsh Government could adapt and implement.