Facebook CEO MarkZuckerberg was calm throughout his hearing, answering questions candidly and confidently.
But senators showed no sign of doing anything as useful as that, so Zuck's net worth has soared. "And I'm sorry", he said.
"I don't want to vote to have to regulate Facebook, but by God, I will", Republican Senator John Kennedy told Zuckerberg on Tuesday.
"Um... no", Zuckerberg said after pausing, then smiled as the room laughed.
He also acknowledged that Facebook did not do enough to prevent the use of its tools to spread fake news. "I realise the issues we're talking about today aren't just issues for Facebook in our community, they're issues and challenges for all of us as Americans".
Facebook will investigate "tens of thousands" of apps to discover if any other companies have accessed data in a similar way to Cambridge Analytica, Mark Zuckerberg has told United States politicians.
The Facebook CEO ducked questions on how Facebook tracks even those internet users who are not logged in the social media site.
Affected users will see one of two notifications, with both saying that the thisisyourdigitallife app was banned by the company for misusing Facebook information.
Patience with the social network had already worn thin among users, advertisers and investors after the company said last year that Russian Federation used Facebook for years to try to sway US politics, an allegation Moscow denies. Zuckerberg said his company has a responsibility to make sure what happened with Cambridge Analytica doesn't happen again.
Others sued in the action, in U.S. District Court in DE, included Cambridge Analytica, SCL Group Ltd. and Global Science Research Ltd., which "obtained the Facebook user data to develop and foster political propaganda campaigns", according to the lawsuit.
Mr Durbin said: "I think that may be what this is all about: your right to privacy, the limits of your right to privacy, and how much you give away, in modern America, in the name of connecting people around the world".
When logged in, a user can go to Facebook's Help Center and search "Cambridge" to get to the portal.
Johnson: So it's kind of safe to say that Facebook users don't seem to be overly concerned about all these revelations, although obviously Congress apparently is?
E Fund MSCI China A GO ETF (CASH)
A reading under 20 would indicate no trend, and a reading from 20-25 would suggest that there is no clear trend signal. Although the CCI indicator was developed for commodities, it has become a popular tool for equity evaluation as well.
'Underdogs' give Champions League much-needed shake-up
But, with Sane's goal scrubbed, a single goal was a meager return for City's relentless and energetic attacks in the first half. Reds boss Klopp said: "I really think they are the best team in the world at the moment but I knew we could beat them".