Originally Posted by
ffsim
Best post of the entire thread ^
Or, instead of arguing with airline employees who may or may not decide to enjoy a little power trip at your expense, just carry a passport. You know, because you're traveling outside your country.
FWIW I've never been asked for my passport when entering Canada with Nexus. That being said, the travel document details I provide at APIS and during check-in are my passport's, and it's the passport that I show to airline check-in staff and TSA agents. Why? Because I'm outside Canada and have my passport with me. And because I don't have any particular desire to argue unnecessarily.
Had to show passport, despite entering Canada on Nexus, when declaring "goods to follow" and needed paperwork to support no duty payable when goods actually arrived. This was downstairs in secondary inspection.