Earlier quoted context omitted.
Im a Canadian and go to the US for work fairly regularly. Something I didn’t realize is that the laws are different in preclearance areas. https://laws-lois.justice.gc.ca/eng/acts/P-19.32/FullText.ht... For example, you are allowed to withdraw your application to enter the US and leave the preclearance area. Additionally you are bound by different laws for search and siezure. At this point I am only going to the US t…
That’s only the Canada -> US leg, though. They can still grab your phone on the US -> Canada return trip, ne pas?
For example leaving the Schengen area it's obligatory to go through "exit immigration" and get your passport stamped. Leaving the US, you show your passport to the airline, but usually there is no formal immigration check at all.