Facebook founder and CEO Mark Zuckerberg is set to testify in a joint hearing before the Senate Judiciary and Commerce committees on April 10.
Zuckerberg is also set to testify with House Energy and Commerce Committee on April 11 to answer questions about the improper gathering of the data of nearly 90 million Facebook users by a British data firm during the 2016 presidential campaign.
The hearing was announced Wednesday evening.
Lawmakers have questioned why Facebook let third parties collect data on its users without their express consent and why Facebook didn’t take stronger action to ensure that Cambridge Analytica deleted the improperly collected user data.
It was previously estimated that the British research firm hired by the Trump campaign had improperly harvested data from about 50 million Facebook users, but new estimates on Wednesday revealed that about 87 million users had data taken.
Facebook has been under intense scrutiny after the initial reports of Cambridge Analytica’s use of data without permission, and many have called on Zuckerberg to testify about the social media platform’s practices.