@Mexontario, really appreciate this thread. I haven't done the OATH yet, but it will be within 2 weeks of a US trip, and curious if you can provide any evidence around the land border difference...I can't find much on
this site. I'm trying to understand if I really need to go for urgent passport pickup, or can I just live without it and use my US passport to return to Canada (by car).
I wouldn't want to risk losing NEXUS by using
that as citizenship proof, while not (yet) having it reflect my new dual-citizenship. The NEXUS site does say that only one citizenship is linked to the card at one time, so perhaps this is a non issue, but it does caution evidence of the
second citizenship may be requested.