Well having read earlier threads on this forum I know that applicants from Nigeria, Ghana did not have to submit any IELTS test results.
I might be wrong, but I know some NAIJA fellows did not have to. I also know that you will have to submit a written proof irrespective of the fact that you are resident of - and work in an English speaking country.
Thank you everyone for your replies.
I did some more searches and it seemed that if you grow up and work in an English speaking country (e.g. USA, UK, etc...), then you will "more likely" not have to deal with the pesky IELTS test.
BobbyB, I know that if one does not supply the IELTS test score, one has to submit a written proof as it's stated on the application checklist.
As for me, I will NOT take that IELTS test and will apply with a written proof.
Hope this help someone. Please chime in if you can help.