I can now add with authority that you do NOT clear US anything in DUB on AA. CO, US, EI, DL yes, AA no.

AA conditions at DUB are at least 2.5rd world. L-O-N-G walks, no jet bridge (it has been known to rain in Ireland), inconsistent lifts and moving sidewalks. I hear the experience on other carriers is better. Cabby said new terminal won't be finished until sometime in 2010 and even then wont have rail