(1) Have you ever worked at a pre-clearance POE? Asking because I am curious of the process.
(2) Do agents have to `clear' through CBP to enter the pre-clearance area?
(3) To my understanding, pre-clearance BSOs are on diplomatic passports?
(4) Let's say that you work at YYZ, YVR, YUL or any of the other Canadian Airports with pre-clearance: Do agents have to clear CBSA to get landside?
(5) Let's say that someone clears CBP, but then does not want to board the flight. What is the process to make sure the I-94 Arrival is corrected?