A CHARMING visit with Jay Leno won't fix it. A 90 percent tax on bankers' bonuses won't fix it. Firing Timothy Geithner won't fix it. Unless and until Barack Obama addresses the full depth of Americans' anger with his full arsenal of policy smarts and political gifts, his presidency and, worse, our economy will be paralyzed. It would be foolish to dismiss as hyperbole the stark warning delivered by Paulette Altmaier of Cupertino, Calif., in a letter to the editor published by The Times last week: "President Obama may not realize it yet, but his Katrina moment has arrived."