Originally Posted by
bernardd
Why do they need this when they have AA from MIA? Is it that certain of the passengers to GCM daren't set foot in the US?
British Overseas Territories Citizens would need to apply for a visa to transit the USA, unless they also have a UK passport (or are a resident of Bermuda).
I do not know if the GCM route is used heavily by persons going from GCM to the UK but the additional paperwork required would no doubt suppress demand from that end.