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Social media CEOs rebuff bias claims, vow to defend election
By Marcy Gordon
Twitter's Jack Dorsey: A Hands-Off CEO in a Time of Turmoil
By Kirsten Grind & Georgia Wells
Facebook, Twitter and Google face questions from US senators
Republicans Make an Unlikely Closing Pitch: Amend Section 230
By Gilad Edelman
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Tech CEOs testify at Capitol Hill hearing: Live Updates & Video Highlights - POLITICO
By Cristiano Lima
Facebook, Google, Twitter CEOs testify before Senate Commerce Committee
By Heather Kelly, Tony Romm & Cat Zakrzewski