I am awaiting my PR card to come to USA from Canada (I already have a PRTD so not worried as much). My question is whether Customs (outgoing customs, not incoming Immigration (CBSA) in particular) will care if a PR card is going outside Canada through any courier service? I.e., I don't know if CBSA is the agency responsible for checking outgoing packages, if at all, or especially if they x-ray individual packages like they do at airports, or if a RFID enabled PR card bleeps or something while passing through? I honestly don't know how customs check small outgoing envelopes from DHL, but if anyone has any idea then please elaborate. I think it's unlikely that PR cards get seized either on Canadian/US side since I haven't read anybody saying so.