The New York Times’ scathing anti-Donald Trump op-ed, which the paper attributed to “a senior official in the Trump administration,” has inspired a parlor game among people trying to figure out the author’s name. Some online commentators are leaning toward Vice President Mike Pence based on just one word in the piece. The unidentified author singles out the late Arizona Sen. John McCain as “a lodestar for restoring honor to public life and our national dialogue.” The word ― which Merriam-Webster defines as either “a star that leads or guides” or a person who “serves as an inspiration, model, or...