Sheryl Sandberg, chief operating officer of Facebook Inc., speaks during a news conference at Station F, a mega-campus for startups located inside a former freight railway depot, in Paris, Jan. 17, 2017.
The committee also took a shot at Alphabet CEO Larry Page, who declined an invitation to appear, by leaving out an empty chair. Follow the live blog below.
The Senate Intelligence Committee has been looking into efforts to influence USA public opinion for more than a year, after United States intelligence agencies concluded that Kremlin-backed entities sought to boost Republican President Donald Trump's chances of winning the White House in 2016.
The statement from Dorsey released by a House panel covered questions about foreign influence operations on social media as well as accusations of political bias.
"Maybe I did a better job because I'm good with the Twitter and I'm good at social media, but the truth is they were all on Hillary Clinton's side, and if you look at what was going on with Facebook and with Google and all of it, they were very much on her side", Trump told the Caller.
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Obviously, when it first happened I'm like hold on, I am going to have to talk to some guys and things like that. We won't be able to win a ring together. "He understood that a lot of us were close with him".
President Donald Trump used Twitter on July 26 to fault the website, without evidence, for using so-called shadow banning, or limiting the visibility of, prominent Republicans. In her opening remarks, Facebook's Sandberg took responsibility on behalf of the company for their slow response to Russian interference in 2016. Earlier this year, special counsel Robert Mueller indicted 13 Russians behind the social media effort.
On bias, the Twitter CEO is aggressive in defending his company, saying in the prepared House testimony that he wants to be clear about one thing: "Twitter does not use political ideology to make any decisions, whether related to ranking content on our service or how we enforce our rules".
Twitter has denied Dorsey was involved in any of the decisions.
He says such behavioral analysis "does not consider in any way" political views or ideology.