Hi, I'm traveling to Mexico via the US (for 4 hour stopover) then back to Australia. I am currently living in Australia on a British passport based 'working holiday visa'. I also have a US passport.
So, to avoid issues like ESTA, re-entry into Australia- which passport do I submit when purchasing flight ticket? (I believe British- due to the fact that it is the one used for my Australia working holiday visa and makes sense for smooth re-entry after Mexico trip).
And if so (yes to British) can I then use my US passport via LA and for Mexico entry?