Bari Weiss, the new editor in chief of CBS News, has pledged to uphold the network’s traditional ideals of objectivity and rigor. Perhaps she will. Yet the evidence suggests a more discouraging future for one of the great pillars of American broadcast journalism. Weiss casts herself as an independent thinker. She has described herself at various times as a left-leaning centrist , a moderate liberal , “ politically homeless ,” a “ radical centrist ,” and a conservative . She has defined her