Facebook CEO Mark Zuckerberg testifies before the House Committee on Financial Services on Wednesday, Oct. 23, 2019. (WTTW News)

Facebook CEO Mark Zuckerberg faced tough questions Wednesday from members of Congress about his social media platform’s digital currency project. We discuss the billionaire tech entrepreneur’s plans for Libra.

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On Tuesday, Facebook formally announced plans for Libra – a cryptocurrency the social network plans to release in 2020. How it’s different, and why some are calling for a halt to its development.