Ever since the National Enquirer leaked salacious details from The Rogue: Searching for the Real Sarah Palin before the book was published, author Joe McGinniss has been embroiled in controversy. First, the tabloid revealed his book’s more lurid accusations against Ms. Palin: An alleged affair with her husband’s business partner, a pre-marital sexual encounter with former NBA player Glen Rice and snorting cocaine. Then The New York Times said Mr. McGinniss used his summer living next door to the Palins in Alaska to “chase caustic, unsubstantiated gossip.”