NEXUS is a joint Canadian/US program, for frequent flyers.

NEXUS essentially has global entry privileges when travelling to or within USA; it gets you the potential to get TSA precheck no differently than Global Entry. NEXUS has special Canadian privileges when entering Canada from a foreign country or when using Canadian airport security.


Under what circumstances, when entering Canada at YYZ from a foreign country - might you get OSS - and how does OSS change any procedures for transfer or transit at YYZ?