Originally Posted by
copperred
The US doesn't do any exit controls or emigration checks (they're notionally done by the airline but get a good laugh out of any country that uses real emigration) so it's hard to imagine they'd be too upset. LAX to HNL would be a domestic flight equivalent.
Except this incident wasn't that ... this incident was Canada to Australia. It's not hard to imagine that there would be more than a few people aboard that flight, who were ineligible to enter the US. Except, all of a sudden, there they were.
That could be upsetting to both the Americans and the passengers. Just imagine if the CFO of a Chinese telco was onboard....