Originally Posted by
tentseller
The US is not the only country to have pre-cleared entry on foreign soil at the port of exit into the US. So it is not US style; it is just prominent at Canadian Airports.
All US intl departures you must show your photo ID as well as proof of admissibility to the destination. It is not just AC, DL and AA check passport on US to Canada flights as well.
Apologies to ask, but would you mind giving examples of other countries that do have pre-clearance in another country?? I understand for example that on the Eurostar line passengers will clear UK customs & immigration in Paris (Gare du Nord train station) and French customs & immigration in London (St Pancras). Thank you