Joe Klein on Why No Obama Poll Bump

"Lots of speculation on the web, and in whispering circles, about why Obama's foreign trip--a slam-dunk success substantively and in photo-op terms (Obama laughing with Petraeus in the helicopter was the best)--hasn't resulted in a polling bump. The emerging conventional wisdom seems to be that the trip is a bit too grand, too...presumptuous and voters are wary of that. (And presumption, of course, always comes with the subterranean tinge of racism.) Maybe so."