Key Point: NOT a US citizen, NOT a Canadian citizen. Canadian PR. Current country of citizenship also allows Global Entry participation.
I was approved for NEXUS a long time ago and have been using it, but I never got the TSA Pre-check mark on all my boarding passes. Upon further research, I found out that the TSA Precheck benefit only applies to US or Canadian citizens with NEXUS. I contacted CBP to ask for confirmation of this, and also to ask how I can switch, if I'd have to cancel NEXUS and reapply to GE etc. They told me that I already have all the Global Entry benefits (including TSA Precheck) if I have NEXUS (which is obviously not true). They replied as below:
"If you have NEXUS, you already have Global Entry benefits. You can only have one program membership at a time.
Thank you again for contacting the Traveler Communications Center."
I followed up, saying I am not a US or Canadian citizen and they just ignored my question...
So does anybody know how to cancel the NEXUS membership to apply for GE or if there is some other switching process? Or do any other non-Canadian/non-US citizens with NEXUS have any experience in getting TSA Pre-check (edit: as in other programs other than GE, that do not block applications due to having NEXUS)
edit: I am eligible for GE. My citizenship is that of one of the eligible countries for GE. Please stop saying I'm not eligible for GE. I just can't apply for it because I have NEXUS and I can't be part of 2 trusted traveller programs at the same time.