George W. Bush left office in January 2009 with one of the lowest job-approval ratings for a president (34 percent) since Gallup started compiling them — as compared to Harry Truman’s low of 32 percent, Richard Nixon’s of 24 percent, and Jimmy Carter’s of 34 percent — and to the general derision of the media. At times the venom accorded Bush in popular culture reached absurd — and even sick — levels. Alfred A. Knopf, for example, infamously published Nicholson Baker’s Checkpoint, a pathetic riff on shooting Bush. Gabriel Range’s unhinged 2006 “docudrama,” The Death of a President, focused on...