My wife filed for ROC in September of 2021 and received the 24 month extension letter. The original green card expired on December 2nd of this year. Today we made a trip up to Canada thru a land border. First trip out of the US since the expiration of the original green card. We got pulled into secondary and were initially told there had been unauthorized use of her Nexus card. In the end what the real problem was, is the expiration of the green card was flagged in the system. Initially was surprised Canada would care since it’s a US immigration thing not a Canadian one, the Green card isn’t a supporting document like a DL or Passport and she’s a Canadian citizen. Just wondering if anybody else has had this happen to them. Also wondering if I should go into the nexus account and update the green card to a 2023 expiration. I guess it’s true since have extension letter and you can update the date with out the need of going into an enrollment center. I may have answered my own question but never seen it addressed here before on this forum. Thanks