Mark Zuckerberg was grilled by the United States House of Representatives financial services committee over Facebook's ad fact-checking policy.

Zuckerberg, who was due to discuss the launch of Facebook's cryptocurrency project Libra, found himself subject to questions from lawmakers about the Cambridge Analytica scandal and Facebook's reluctance to police political advertising.

To discuss this, we were joined by Katherine O'Keefe, data protection consultant at Castlebridge, and Gavin Sheridan, CEO of legal intelligence company Vizlegal.

Listen to the interview in full by pressing the play button on this page.