Dear all,
I am quite confused on how/when to use US or foreign passport during travel. Did some research in several forums but could not pinpoint the answers.
Just wondering as a naturalized citizen, while taking flights from US to the other countries, could I use my previous foreign passport (still valid) to check in with the airlines?
For example, would it be a problem if I use my previous foreign passport to check in with UA at LAX? Or this will be considered as an act to automatically abandon my US citizenship?
The reason is because of the visa: short travel notice, no enough time to get visa. Thanks
Carl
I don't think there is enough information here for people to advise you.
In one case the answer would be absolutely clear: does the country of the foreign passport allow dual citizenship? If the answer is "no", then the foreign passport becomes invalid the instant you become a US citizen. If the foreign country hasn't been advised of the acquisition of US citizenship, then their passport may still be listed in relevant databases as valid for awhile. But attempting to use (in ANY situation) a passport that is legally not valid is very risky and not something I'd recommend.
If the foreign country allows dual citizenship, then the question becomes whether you have a US passport yet. If you don't have a US passport, then checking in for your flight might be difficult. The airline would ordinarily expect to see either an I-94 card or a green card if you are leaving the USA with a foreign passport. Since you have neither as a naturalized citizen, you might have trouble checking in for your flight. For Canadian - US dual citizens this might be less of an issue since Canadians routinely enter the USA without an I-94 card.
OTOH let's say you have both the foreign passport and the US passport, and both passports are legally valid according to US/foreign laws. But you don't have time to get a visa in your US passport. In that case, the question would become whether you are planning to visit the country of your foreign passport. In such a case, you definitely would NOT want or need a visa in your US passport. You remain a citizen of the foreign, and you don't need (and usually can't get) a visa to visit a country whose passport you carry. In that case, you would first check in with the airline using your US passport (since you are on US soil). When the airline asks to see a visa for the foreign country, show the foreign passport and you should be fine.
Finally let's say you carry both a valid foreign passport and a valid US passport, but want to visit a third country, and don't have time to get a visa in you US passport. In that case, if the foreign passport is still valid, then any visa for the third country in that foreign passport should still be valid. Again, you would check in with your US passport, and then when asked to show the visa, show the foreign passport with the third country visa.
If the airline flies to a given country, they should be familiar with that country's entry requirements and shouldn't give you any problems. Things sometimes do get tricky when you are making multiple connections and you are initially checking in with an airline unfamiliar with procedures in your ultimate destination.