At one point a few years ago, there was talk of the ICAO allowing an ATP issued by any member state to be accepted by all members. That was before the JAA 14 part nightmare came into existance.
That clearly died on someone's desk.
But I have a question--Why do you believe the U.S. is so much more protectionist than the EU (or even Canada)? I have absolutely NO chance of gaining employment in the EU (other than with an Irish airline...

) because I don't have the right to work there.
Why is that different than the U.S.? TC