Dual citizenship is a status which allows someone to be a citizen of two nations. Having dual citizenship can have many advantages, such as social security and travel and employment opportunities. Acquiring a second citizenship is only permitted in those countries that allow dual citizenship. There are an increasing number of countries which permit this.
The United States of America recognises dual citizenship. If you were born in another country outside of America, and then move to the United States and become a naturalised U.S. citizen, you will gain dual citizenship provided that your native country allows it.
Citizens of Canada who have acquired citizenship in another country are able to maintain their Canadian citizenship. The only instance in which they will lose this is if they submit an application voluntarily renouncing it and the request is approved by a citizenship judge.
British citizens are not required to give up their citizenship in another country to become a British citizen. Dual citizens in the United Kingdom are permitted to hold a second passport along with a British passport.
Under Italian law, those who acquired citizenship from another country are permitted to retain their Italian citizenship if it was acquired after August 15, 1992. However, if the foreign citizenship was acquired after that date, but before March 31, 2001, Italian authorities had to be notified within 90 days.
In accordance with Swedish legislation, citizenship is acquired at birth if either of a child's parents is a Swedish citizen, irrespective of the place of birth. Since the Swedish Citizenship Act of 2001 was implemented, Sweden accepts dial citizenship.
Australian citizens are able to keep their Australian citizenship after being granted citizenship from another country. Citizens of foreign countries qualify to apply for Australian citizenship by birth, by marriage or by living in Australia legally for four years, including at least one year as a permanent resident.
In New Zealand, you do not need to give up your citizenship in another country to become a New Zealand citizen. Prior to 2006, children who were born in New Zealand were automatically granted New Zealand citizenship. However, from 2006, they will only acquire this status at birth if at least one of their parents holds New Zealand citizenship or is a permanent resident of New Zealand.