The Obama campaign's bigger problem, both sides are now realizing, is that his words go beyond politics and are more devastating than the Romney complaints that Mr. Obama is too big-government oriented or has mishandled the economy. They raise the far more potent issue of national identity and feed the suspicion that Mr. Obama is actively hostile to American ideals and aspirations. Republicans are doing their own voter surveys, and they note that Mr. Obama's problem is that his words cause an emotional response, and that they disturb voters in nearly every demographic.