@CNN: Top official at railroad safety agency resigns after ethics questions raised https://t.co/AQrXXbMR8p https://t.co/9IvblcvD40
Top official at railroad safety agency resigns after ethics questions raised https://t.co/AQrXXbMR8p pic.twitter.com/9IvblcvD40
— CNN (@CNN) February 11, 2018