Lawmakers grill Mark Zuckerberg on political ads, election security
Facebook CEO Mark Zuckerberg appeared on Capitol Hill to testify about Libra, a new cryptocurrency co-founded by the social network. Lawmakers pressed Zuckerberg on a range of other topics, including fact-checking political ads, election security and misinformation. CNET senior producer Dan Patterson joins CBSN to discuss Zuckerberg's testimony.