I see plenty of foreign metal doing just what we do in Europe. Iberia has a hub in Miami.
Lets not forget that Egypt Air went LAX JFK then into the Atlantic.
Plenty of Greg aircraft flying out of ORD in the winter.
I see no UPS birds doing MAN LHR while picking up freight in MAN and dropping the same freight off in LHR.
I am sorry that your country is so tiny and ours is so vast but the facts are we do operating under the same terms.
Cheers
Wino