The CEO of rail operator Norfolk Southern told a key Senate committee that he’s "deeply sorry" for the impacts of the toxic East Palestine, Ohio, train derailment and committed to safely cleaning the site as lawmakers grilled him about the company's response. CNN's Sunlen Serfaty and Jason Carroll have more. Then, CNN's Kat Bolduan speaks with Sarah Feinberg, the former acting Administrator of the Federal Railroad Administration. #CNN #News