Could be writing styles. That’s one possible way.
That's the very first thing that crossed my mind within the first minute. Need some more evidence than that though.
Could be writing styles. That’s one possible way.
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Yes, that and phraseology along with use of particular words and expressions. Tucker and company either have a hint as to who it is or they combined that with an examination of distinctive word patterns. We all tend to repeatedly rely on the use of certain words and phrases in our writing and speaking.
If its someone in the WH it shouldn’t be that hard to isolate them because of the extensive use of email and memos.
One more thing...the writer has probably expressed similar, if not identical, thoughts in writing before (e.g., in blogs). Chances are this is not his first rodeo spouting this kind of disloyal verbiage.