Originally Posted by
pitz
If he doesn't have paperwork (or is from a visa waiver country, ie: the USA) to enter Canada, he won't be allowed on the flight at Charlotte.
Sterile transfers aren't available in Canada. All passengers must clear Canada Customs.
Really? I had always assumed that was the reason for the separation into customs A/B. What about going the other way (intl - yyz - transborder)?