It probably wasn’t a Cabinet member. My nominee is Sen. Lindsey Graham, a dear and valued friend of John McCain who has shifted positions and become a defender of Trump. I can’t think of anyone more likely, right now, to be horrified at what is going on and yet feel powerless to fight it openly; to be suffering pangs of remorse and yet afraid to speak out under his own name. Of course, I know nothing more than what I read, which includes McCain’s own recent book. But I’d say that any reasonably intelligent person who doesn’t wish to be identified would have the sense to try to cast off suspicion by the use of language and other suggestive details. Therefore I would tend to think that anyone the article seems to point to is most likely not the author.