https://www.reuters.com/article/us-facebook-cryptocurrency/facebook-executive-confident-libra-will-win-enough-financial-backers-idUSKBN1WV1Y9 >Facebook Inc , whose digital currency project Libra has been abandoned by several high-profile partners including PayPal, Visa and Mastercard, still expects to get 100 banks and financial firms on board once it addresses regulatory concerns, the head of the project said on Wednesday.