Quote: Raggytash "How about Jason Nightingale, Brent Webb or all the Tongans/Samoans/Cook Islanders that play for the Kiwi's?'"
It's a bit more complex with them as a lot of those Islands are governed by NZ and belong to them. They also never had national sides untill not so long ago.
I'm happy for players who were brought up in the youth system of that country to be eligible to play for either their country of birth or their adopted country. When a player signs their first professional contract they will then have to pick their alligence, and stick with it, for rep football and transfers/over seas quotas.