PBS CEO Paula Kerger refused to defend PBS host Jim Lehrer’s debate performance, even failing to push back against the idea that Lehrer is too old and too white for the job. “It was a very complicated debate structure, and you saw that I think in the debate last night,” Kerger said yesterday on CNN when asked to evaluate Lehrer. CNN’s Carol Costello then asked whether Lehrer should have had the job in the first place. “There was criticism when Jim Lehrer was initially named to be a moderator. People said: ‘oh, another white guy; he’s too old to be...