In 1950, women who married foreigners could decide for themselves whether to keep Norwegian citizenship or not.

In 2012, of the total 710 465 with immigrant background, 407,262 had Norwegian citizenship (60.2 percent).

In addition, they must hold Norwegian citizenship and be eligible to vote, meaning that they have attained the age of 18.

The passport may also serve as proof of Norwegian citizenship and is valid for ten years.

In 2012, of the total 660 000 with immigrant background, 407,262 had Norwegian citizenship (62.2 percent).

He received Norwegian citizenship in the same year.

Applicants for Norwegian citizenship are not required to take the oath, it is optional.

His wife and four children have Norwegian citizenship, but not Krekar himself.

He maintained his Norwegian citizenship through a long life, but he lived most of his time abroad.