Good point. He'll love that. Especially if I tell him that he's practically the same to the English as the French are now. (He's lived in the states for probably 20+ years, but did a stint in South Africa when he first left the UK).
I doubt disdain for the French probably exists there today as he seems to remember it. Calling him non-English may get a small reaction, but calling him "practically the same as a Frenchman" will definitely trigger a lot of profanity.