https://techcrunch.com/2017/10/31/senate-judiciary-russia-hearing-facebook-google-twitter/

On Tuesday, the Senate Judiciary Committee kicked off the first of three hearings this week examining the relationship between social media and Russian interference in the 2016 U.S. presidential election. The hearings mark the first time that lawmakers will hear testimony from Google, Facebook and Twitter around how their platforms were and are manipulated as part of Russian political disinformation campaigns targeting U.S. voters.

“This is really a critical hearing,” Committee Chair Lindsey Graham declared in his opening remarks. “It marks the first time we will have heard from the three agencies about exactly what is going on and what exactly they are prepared to do to stop it.”