Jack Mcclelland said this quote

“ It has been our experience that American houses insist on very comprehensive editing; that English houses as a rule require little or none and are inclined to go along with the author's script almost without query. The Canadian practice is just what you would expect--a middle-of-the-road course. We think the Americans edit too heavily and interfere with the author's rights. We think that the English publishers don't take enough editorial responsibility. Naturally, then, we consider our editing to be just about perfect. There's no doubt about it, we Canadians are a superior breed! (in a letter to author Margaret Laurence, dated May, 1960) ”