@CNN: Rep. Debbie Dingell grills Facebook’s Mark Zuckerberg, telling him, “As CEO, you didn’t know some key facts” https://t.co/EwlV7YE02R https://t.co/YLDQBL3y3W

@CNN: Rep. Debbie Dingell grills Facebook’s Mark Zuckerberg, telling him, “As CEO, you didn’t know some key facts” https://t.co/EwlV7YE02R https://t.co/YLDQBL3y3W