https://www.reuters.com/article/us-facebook-congress/facebooks-zuckerberg-grilled-in-u-s-congress-on-digital-currency-privacy-elections-idUSKBN1X2167 >Facebook Inc CEO Mark Zuckerberg conceded on Wednesday that the company's planned digital currency Libra was a "risky project," but sought to reassure skeptical U.S. lawmakers that it could lower the cost of electronic payments and open up the global financial system to more people.