Facebook CEO Mark Zuckerberg testified on Capitol Hill Tuesday to answer questions about protecting user data.
The hearing held by the Senate Judiciary and Commerce committees follows news that the data-mining and political consulting firm Cambridge Analytica obtained personal information of up to 87 million Facebook users.
The firm is accused of using that information to target Facebook users with political advertising in 2016. The two Senate committees held a joint hearing called "Facebook, Social Media Privacy, and the Use and Abuse of Data."
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On Wednesday, Zuckerberg will appear on Capitol Hill for a second day of hearings about protecting its users' data. The House Energy and Commerce Committee hearing will also be live streamed.
Watch the live video here: