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My understanding is that the passport is not actually required at the CBP checkpoint if you present a valid unexpired green card. But yeah, there's no way diffe

My understanding is that the passport is not actually required at the CBP checkpoint if you present a valid unexpired green card. But yeah, there's no way different officers should be yelling contradictory things at you. Side note: A passport may still be required to board an inbound international flight even if I'm right about it not needing to accompany a green card at the CBP checkpoint, depending on the rules of the airline and the departure country.

mynameisvlad 4y ago
Is it? I've been yelled about doing or not doing it so much that I can't keep track anymore. That part of my life is behind me so now I get the next fun challenge: Which passport to use when going up to Canada and back as a dual citizen.
- jkaplowitz 4y ago
  That one is clearer, at least. TL;DR for the easiest experience - bring both passports, enter and leave each country on the respective passport, and if anyone is confused, show both passports and explain that you're a dual citizen. To enter and leave the US, you're supposed to use a US passport and not a Canadian one. To enter Canada, it's smoothest and fastest to use your Canadian passport, but they do have an exception for US-Canadian dual citizens that allow you to use a US passport. If you use a US passport and claim to be a Canadian citizen at a CBSA checkpoint, they might send you to immigration screening to verify your claim, especially if you don't also show some evidence of citizenship like your citizenship certificate. If you use a US passport and claim to be a Canadian citizen to a commercial transportation company like an airline on the way into Canada, they're advised to do "due diligence", but there is no specific set of documentation required. The citizenship certificate would probably satisfy them, and in practice many times maybe the US passport by itself too.

mynameisvlad 4y ago

Is it? I've been yelled about doing or not doing it so much that I can't keep track anymore. That part of my life is behind me so now I get the next fun challenge: Which passport to use when going up to Canada and back as a dual citizen.

jkaplowitz 4y ago
That one is clearer, at least. TL;DR for the easiest experience - bring both passports, enter and leave each country on the respective passport, and if anyone is confused, show both passports and explain that you're a dual citizen. To enter and leave the US, you're supposed to use a US passport and not a Canadian one. To enter Canada, it's smoothest and fastest to use your Canadian passport, but they do have an exception for US-Canadian dual citizens that allow you to use a US passport. If you use a US passport and claim to be a Canadian citizen at a CBSA checkpoint, they might send you to immigration screening to verify your claim, especially if you don't also show some evidence of citizenship like your citizenship certificate. If you use a US passport and claim to be a Canadian citizen to a commercial transportation company like an airline on the way into Canada, they're advised to do "due diligence", but there is no specific set of documentation required. The citizenship certificate would probably satisfy them, and in practice many times maybe the US passport by itself too.