加拿大
http://www.cic.gc.ca/english/visit/dual-canadian-citizens.asp
Travel documents for dual Canadian citizens flying to Canada
Canada’s new entry requirement
A new entry requirement, known as an Electronic Travel Authorization (eTA), is now in effect for visa-exempt foreign nationals travelling to or transiting through Canada by air. To make sure travelling to Canada stays easy and stress free, leniency will be shown to travellers who are caught unaware until September 29, 2016.
However, starting September 30, 2016, all air travellers, including Canadian citizens, will need to have appropriate documents to travel to Canada before they can board their flight.
What this change means for dual Canadian citizens
If you are a Canadian citizen and a citizen of a visa-exempt country (dual Canadian citizen) who currently uses your non-Canadian passport to fly to Canada, you cannot apply for an eTA. This is because eTA was set up to screen foreigners for admissibility to enter Canada on a temporary basis.
Every Canadian citizen has the right to enter Canada and is not subject to immigration screening. Travelling with a valid Canadian passport proves that you are a citizen.
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美国
https://travel.state.gov/content/tr...ip-and-dual-nationality/dual-nationality.html
Most U.S. nationals, including dual nationals, must use a U.S. passport to enter and leave the United States.
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英国
https://www.gov.uk/dual-citizenship
Dual citizenship (also known as dual nationality) is allowed in the UK. This means you can be a British citizen and also a citizen of other countries.
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澳大利亚
https://www.border.gov.au/Trav/Citi/Curr/Dual-citizenship#
Entering and leaving Australia
All Australians, including dual nationals, should leave and enter Australia on their Australian passport. If you have a passport from another country you can use that for travel once you have left Australia.
People trying to enter Australia as an Australian citizen but without an Australian passport will face difficulties and delays. An Australian passport is the preferred and most conclusive proof of Australian citizenship when travelling.
International airlines have an obligation to carry only appropriately documented passengers to Australia. Appropriate documentation for Australian nationals is an Australian passport. Appropriate documentation for a foreign national is a visa to enter Australia. If an Australian national attempts to board a flight to Australia without an Australian passport, airlines will likely be unable to verify their claim to Australian citizenship at the time of check-in and may refuse boarding. See the Department of Immigration and Border Protection website for further information on citizenship and travel.
Entering and leaving your country of other nationality
Dual nationals may choose to enter and leave the country of their other nationality on that country's passport. If planning to do this, dual nationals should be aware that some countries impose specific restrictions on their departing nationals, such as the requirement for an exit visa in their passport.
Be aware that, if you enter your country of other nationality on that country’s passport, local authorities might not recognise your Australian nationality, even if that country recognises dual nationality. This may limit the ability of the Australian government to provide consular assistance.
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新西兰
http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Citizenship-Dual-citizenship?OpenDocument
New Zealand allows dual citizenship, but some other countries don’t.
This means you don’t have to give up your New Zealand citizenship to become a citizen of another country, or give up your current citizenship to become a Kiwi.
。。。。。。
http://www.cic.gc.ca/english/visit/dual-canadian-citizens.asp
Travel documents for dual Canadian citizens flying to Canada
Canada’s new entry requirement
A new entry requirement, known as an Electronic Travel Authorization (eTA), is now in effect for visa-exempt foreign nationals travelling to or transiting through Canada by air. To make sure travelling to Canada stays easy and stress free, leniency will be shown to travellers who are caught unaware until September 29, 2016.
However, starting September 30, 2016, all air travellers, including Canadian citizens, will need to have appropriate documents to travel to Canada before they can board their flight.
What this change means for dual Canadian citizens
If you are a Canadian citizen and a citizen of a visa-exempt country (dual Canadian citizen) who currently uses your non-Canadian passport to fly to Canada, you cannot apply for an eTA. This is because eTA was set up to screen foreigners for admissibility to enter Canada on a temporary basis.
Every Canadian citizen has the right to enter Canada and is not subject to immigration screening. Travelling with a valid Canadian passport proves that you are a citizen.
----------
美国
https://travel.state.gov/content/tr...ip-and-dual-nationality/dual-nationality.html
Most U.S. nationals, including dual nationals, must use a U.S. passport to enter and leave the United States.
----------
英国
https://www.gov.uk/dual-citizenship
Dual citizenship (also known as dual nationality) is allowed in the UK. This means you can be a British citizen and also a citizen of other countries.
----------
澳大利亚
https://www.border.gov.au/Trav/Citi/Curr/Dual-citizenship#
Entering and leaving Australia
All Australians, including dual nationals, should leave and enter Australia on their Australian passport. If you have a passport from another country you can use that for travel once you have left Australia.
People trying to enter Australia as an Australian citizen but without an Australian passport will face difficulties and delays. An Australian passport is the preferred and most conclusive proof of Australian citizenship when travelling.
International airlines have an obligation to carry only appropriately documented passengers to Australia. Appropriate documentation for Australian nationals is an Australian passport. Appropriate documentation for a foreign national is a visa to enter Australia. If an Australian national attempts to board a flight to Australia without an Australian passport, airlines will likely be unable to verify their claim to Australian citizenship at the time of check-in and may refuse boarding. See the Department of Immigration and Border Protection website for further information on citizenship and travel.
Entering and leaving your country of other nationality
Dual nationals may choose to enter and leave the country of their other nationality on that country's passport. If planning to do this, dual nationals should be aware that some countries impose specific restrictions on their departing nationals, such as the requirement for an exit visa in their passport.
Be aware that, if you enter your country of other nationality on that country’s passport, local authorities might not recognise your Australian nationality, even if that country recognises dual nationality. This may limit the ability of the Australian government to provide consular assistance.
----------
新西兰
http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Citizenship-Dual-citizenship?OpenDocument
New Zealand allows dual citizenship, but some other countries don’t.
This means you don’t have to give up your New Zealand citizenship to become a citizen of another country, or give up your current citizenship to become a Kiwi.
。。。。。。
