Upvote:0
You don't need a passport at all.
A NEXUS card alone is valid for entry to the US and Canada, even by air if flying between the US and Canada. Same goes for a Canadian enhanced driving licence (by land)
So just show your NEXUS Card.
Upvote:2
Yes, you can. I use NEXUS (and have a Canadian passport). I renewed my passport a few months ago. I asked border agents from both US and Canadian customs if I was okay during the renewal process, and they advised that I was still allowed to use NEXUS. You may have issues flying, as airlines might insist on you having a valid passport, but land crossings are certainly not a problem.
My next crossing was done under exactly these circumstances and everything went fine.