Originally Posted by uncomfortable

It looks quite clear that you can use GE before you receive the card as long as you have been approved.
But what happens if you fly from Canada to the US where there is pre-clearance?

I have been approved on 2/18, and CBP says my card was printed on 2/21, but still I haven't received anything. I am flying in a couple of days from Montreal Airport into the US: it seems clear that I can use Global Entry, but that may be irrelevant if, without the NEXUS Card, I am not allowed to use the preferential lane at the security checks. In fact, in the transborder terminal in Montreal first you go through security and then you go through US Immigration.

How will I be able to prove that I am a Global Entry member without the NEXUS Card? Anybody had this problem before? I called a bunch of numbers at the airport and they kept referring me to someone else, until I eventually ended up calling a number that only delivers a recorded message suggesting to call back some other time or to send an email.

Thanks in advance to anyone who can help.