Join Date: May 2006
Location: New York, London, Sydney
Programs: United GS/2MM, DL*P, VS*G, AA*EXP, Avis CHM, Hertz Platinum, Sixt*D, HH*D, HGP*P, Starwood*P
Posts: 9,877
Despite my advice to the contrary, a friend who is dual recently got an ETA in her US passport and had no issues in/out.
I always do what wallaby suggested.