For DV-Lottery purposes, it's based on birthplace (or spouse's birthplace). So you normally register as Irish. E-3 is a temporary visa, so you can apply based on your (Australian) passport. If you subsequently go for a green card, again they look at birthplace. thanks a lot for the quick response. ...

Hi, I'm irish-born and therefore an irish citizen and passport holder. however i have also spent a number of years living in australia during which time i went through the naturalization process and became a citizen and passport holder there I am wondering if on my green card lottery application i c...