I heard this joke a little differently, and to avoid offending anyone, I have substituted the Ethnic backgrounds for "something else". Fill in your own ethnic..

Three men, an American, an Irishman, and an Englishman, were walking along and found a lamp.

They rubbed the lamp and a Geni appeared.

The Geni scratched his head and said, you usually get three wishes, but since there are three of you, I'll give you one wish each.

The Irishman said "I wish all my people were happy ahd healthy and back on the Emerald isle"

Poof! He was gone.

The englishman, not to be outdone then said "I wish all MY people were happy and healthy and back in England".

Poof! He was gone.

The American, thought for a minute, and said to the Geni " Did the Irishman and Englishman get their wishes?"

"Yes, of course" the Geni replied.

The American replied, "then I'll have a coke."