According to the report, Zuckerberg has "come to terms with the fact" that he will be unable to avoid the calls to testify and members of his team within Facebook are already working to craft a strategy for his testimony.
Facebook CEO Mark Zuckerberg has been under fire in recent weeks as the Cambridge Analytica scandal has widened. Also receiving invitations to appear at the hearing are Google CEO Sundar Pichai and Twitter CEO Jack Dorsey.
Other committees, including the Senate Commerce Committee, have said that they want Zuckerberg to testify as well, and at least one lawmaker, Sen. But US lawmakers have asked Facebook's CEO to testify before at least three Congressional committees.
On Tuesday, Zuckerberg turned down a similar request from Britain to answer questions on the social network's privacy practices.
But Zuck snubbed the invite, and said he'd send a less senior Facebook rep instead.
Cambridge Analytica, a political data-mining firm, is accused of lifting data from some 50 million Facebook users to influence voters in the 2016 election.More news: Vicki Momberg sentenced to three years in jail
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The company has faced a global outcry after a whistleblower said that data from millions of users was improperly harvested by consultancy Cambridge Analytica to target U.S. and British voters in close-run elections.
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Christopher Wylie, the former director of research for Cambridge Analytica met with British lawmakers to discuss the data firm's operations.
Facebook has long tried to keep the faces of its company, namely Zuckerberg and COO Sheryl Sandberg, away from regulatory hearings.
In a blog post announcing the changes, Ms Egan said: "Last week showed how much more work we need to do to enforce our policies and help people understand how Facebook works and the choices they have over their data".
In full-page advertisements in British and USA newspapers this week Zuckerberg said the app built by a university researcher "leaked Facebook data of millions of people in 2014".