The days are long gone, IAP, when it was 'our' language, I'm afraid. I'm not sure why I said 'I'm afraid', because I strongly believe that variety is the spice of life in language as well as other things.
There is now American English, South African English, Australian English, Indian English, West Indian English and so on. The variant in Singapore is, apparently, called Singlish!
Good luck to all of 'em, I say.
The French Academy is always trying to stamp out franglais usages, but that doesn't stop the French people saying le weekend, le sandwich - probably pronounced song-weech - and so on. If they can use our language to suit themselves, I can't think of any reason why the Americans shouldn't have roke-fort!
Cheers