NOT until 2004 could the 9/11 commission at last reveal the title of the intelligence briefing President Bush ignored on Aug. 6, 2001, in Crawford: “Bin Laden Determined to Strike in U.S.” No wonder John McCain called for a new “9/11 commission” to “get to the bottom” of 9/14, when the collapse of Lehman Brothers set off another kind of blood bath in Lower Manhattan. Put a slo-mo Beltway panel in charge, and Election Day will be ancient history before we get to the bottom of just how little he and the president did to defend America against a devastating new threat on their watch.

For better or worse, the candidacy of Barack Obama, a senator-come-lately, must be evaluated on his judgment, ideas and potential to lead. McCain, by contrast, has been chairman of the Senate Commerce Committee, where he claims to have overseen “every part of our economy.” He didn’t, thank heavens, but he does have a long and relevant economic record that begins with the Keating Five scandal of 1989 and extends to this campaign, where his fiscal policies bear the fingerprints of Phil Gramm and Carly Fiorina. It’s not the résumé that a presidential candidate wants to advertise as America faces its worst financial crisis since the Great Depression. That’s why the main thrust of the McCain campaign has been to cover up his history of economic malpractice.

McCain has largely pulled it off so far, under the guidance of Steve Schmidt, a Karl Rove protégé. A Rovian political strategy by definition means all slime, all the time. But the more crucial Rove game plan is to envelop the entire presidential race in a thick fog of truthiness. All campaigns, Obama’s included, engage in false attacks. But McCain, Sarah Palin and their surrogates keep repeating the same lies over and over not just to smear their opponents and not just to mask their own record. Their larger aim is to construct a bogus alternative reality so relentless it can overwhelm any haphazard journalistic stabs at puncturing it.

When a McCain spokesman told Politico a week ago that “we’re not too concerned about what the media filter tries to say” about the campaign’s incessant fictions, he was channeling a famous Bush dictum of 2003: “Somehow you just got to go over the heads of the filter.” In Bush’s case, the lies lobbed over the heads of the press were to sell the war in Iraq. That propaganda blitz, devised by a secret White House Iraq Group that included Rove, was a triumph. In mere months, Americans came to believe that Saddam Hussein had aided the 9/11 attacks and even that Iraqis were among the hijackers. A largely cowed press failed to set the record straight.