I have a very close friend who has a PhD in an engineering discipline from a leading American university where I taught and a very strong minor in applied mathematics and his spoken and written English is far from perfect. So what? Does that fact make him any less intelligent or sympathetic as a human? Get real. I spent decades as a university professor working with masters and doctoral sutdents whose English was often difficult but whose minds were superior in every way. Your point is fatuous and insulting.