@MarkWarner is calling for @facebook CEO Mark Zuckerberg and other tech CEOs to testify on Capitol Hill. Details from @StevenOverly: http://politico.pro/2GMNyyG
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@MarkWarner is calling for @facebook CEO Mark Zuckerberg and other tech CEOs to testify on Capitol Hill. Details from @StevenOverly: http://politico.pro/2GMNyyG