Isn't it about time we 'bit the bullet' and started calling the language spoken in the USA 'American'? To my mind the two languages are now different enough to warrant different names. The differences are especially apparent in two fields; slang, and the language of political correctness, with it's incredible contortions to avoid offence. I certainly don't want to have to continually qualify my first language as 'English' English.
Note for the Apostrophe Police; here are a few random ones, for people to use as they see fit.

'''''''''''''
                      ''                ''''

'             '             ''''''''
Tim (with tongue firmly in cheek)