Mr. Gannon Stays in Washington Drop by the National Press Club on any given day and you’re likely to see the glistening bald pate of Jeff Gannon, a.k.a. James Guckert. The former White House correspondent for the now-defunct conservative Web site talonnews.com haunts the Club’s premises like a lobbyist at the Charlie Palmer Steakhouse. Dana Milbank, a formerWashington Post White House correspondent...