Originally Posted by
Dannyboy39
To ask a wider question - I still don’t understand why whenever you are connecting onto another international flight (or going to a domestic from international), you have to clear security again at the connecting airport.
I would understand if some countries would be classed as high risk, but going from UK-USA and vice versa, is the USA suggesting that the security methods are not good enough? Surely there’s enough cooperation to trust each other’s protocols.
Think about it.
It's not a question of where you came from, or how good security was at the origin, it's a question of where all the other passengers on all the other arriving flights with whom you are mixing in the arrivals/transfer area came from.
An airport like Heathrow, for example, with incoming flights from 200+ originating airports, can't possibly take security at all of them on trust.