Under pressure from regulators, the Libra project may consider a fundamental change to the way its planned crypto payments system will operate.
Bucking a trend, Sen. Mike Rounds (R-S.D.) wrote a letter praising Libra as a technological advance that he feels is needed.
No mention of Libra.
The French finance minister has said Libra is an "unacceptable" challenge to state sovereignty and suggested political motives behind the project.
Federal Reserve governor Lael Brainard delivered a sharp critique of Libra, which would need to resolve many regulatory hurdles before going live.
The Libra Association has said the project is undeterred by recent setbacks and expects to sign up 100 partners before it goes live.
Libra, says Stefan Ingves, is forcing central banks to re-consider their primary product: money.
At a charter signing in Geneva on Monday, the Libra Association locked in 21 members of its governing council.
Visa, Mastercard, eBay, Stripe, Mercado Pago and PayPal have all withdrawn from the Libra Association now.
Facebook CEO Mark Zuckerberg will defend Libra before U.S. lawmakers later this month.