Exactly. They have the data, but they’d need to link it to a few other sources for it to be complete.
The US, unlike Europe (at least in my experience) doesn’t check passports on the way out. They rely on flight manifests or information from Canadian authorities on who has exited.
The US, unlike Europe (at least in my experience) doesn’t check passports on the way out. They rely on flight manifests or information from Canadian authorities on who has exited.