Wife and I have Nexus cards. Pretty much sell your soul to get them. Complete set of finger prints for the US folks, retina scan for the canuks. Kind of surprised they didn't want DNA. Plus the wait time and in person interview. I'm sure they checked us out out very thoroughly.
Ours expire next year and I have applied for renewal. The website acknowledged renewal in progress and stated there were delays, but we could continue using the old cards in the mean time. They are handy when arriving and there are big lines at customs. Still have to wait for luggage though. I know the covid thing put a wrench in the works, but now there is some kind of issue with security of the agents at Canadian offices. I think it has to do with side arm carry. As a result, the US has closed all canukistan offices.
Seems like a pizzing contest as far as I see.