Originally Posted by
EsquireFlyer
Which Asian countries do you mean? Many Asian countries force re-screening of transit passengers anyway, so it's a moot point whether the US screening was "sufficient" by their standards or not, because they just re-screen. So then no agreement would be necessary.
I think they don't want such passengers in their airspace. For example, on a couple of flights from ADD to IAD we had to stop in Rome soley for the purpose of rescreening the passengers. That was the conditon of allowing a "direct" flight from ADD to the U.S. (and if you saw the clown school that passed for security at ADD, you'd understand why).
So I think the agreement of the destination country is necessary.