Facebook chief executive Mark Zuckerberg Mark Elliot Zuckerberg2.5 million US users register to vote using Facebook, Instagram, Messenger Hillicon Valley: Trump's ban on TikTok, WeChat in spotlight | NASA targeted by foreign hackers | Instagram accused of spying in lawsuit The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump contradicts CDC director on vaccine, masks MORE will testify before the House Energy and Commerce Committee later this month, lawmakers said on Wednesday.

The Facebook CEO’s testimony will address how the British research firm used by the Trump campaign, Cambridge Analytica, improperly harvested data from 50 million Facebook users.

“This hearing will be an important opportunity to shed light on critical consumer data privacy issues and help all Americans better understand what happens to their personal information online," said Energy and Commerce Chairman Greg Walden Gregory (Greg) Paul WaldenTrump order on drug prices faces long road to finish line Ignore the misinformation: The FDA will ensure the safety of any COVID-19 vaccine Hillicon Valley: Trump backs potential Microsoft, TikTok deal, sets September deadline | House Republicans request classified TikTok briefing | Facebook labels manipulated Pelosi video MORE (R-Ore.) and the committee's top Democrat, Rep. Frank Pallone Jr. Frank Joseph PallonePharma execs say FDA will not lower standards for coronavirus vaccine Dem chairmen urge CMS to prevent nursing homes from seizing stimulus payments Federal watchdog finds cybersecurity vulnerabilities in FCC systems MORE (N.J.) in a statement.

"We appreciate Mr. Zuckerberg’s willingness to testify before the committee, and we look forward to him answering our questions on April 11th," they added.

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Facebook officials had previously briefed the Energy and Commerce Committee, as well as other congressional committees on the Cambridge Analytica breach, but Walden said that "many questions were unanswered.”

“Mr. Zuckerberg has stated that he would be willing to testify if he is the right person. We believe, as CEO of Facebook, he is the right witness to provide answers to the American people,” Walden and Pallone said at the time.

Zuckerberg has also been formally invited to testify at a Senate Judiciary Committee hearing scheduled for April 10, and Senate Commerce Committee Chairman John Thune John Randolph ThuneGraham: GOP will confirm Trump's Supreme Court nominee before the election Tumultuous court battle upends fight for Senate What Senate Republicans have said about election-year Supreme Court vacancies MORE (R-S.D.) has said that he would like Zuckerberg to testify before his panel as well.

Since Facebook revealed the Cambridge Analytica breach of user data, the company has been mired in scrutiny from lawmakers on both sides of the aisle over its data privacy and collection practices.

Lawmakers have questioned why the company let third parties collect data on Facebook users’ friends, without their express consent, and why Facebook didn’t take stronger action to make sure Cambridge Analytica came through on its promises to delete improperly collected user data.

Critics have also been eager to know if the Cambridge Analytica data was ever used by the Trump campaign or by groups seeking to influence the Brexit vote in the U.K.

The disclosure has sparked new debate over user privacy on the internet among the public as well.

Facebook is also dealing with criticism over the spread of hoax news stories on its platform, and Russians using it to influence election in the U.S. and other countries.

— This report was updated at 8:40 a.m.