The US Senate banking committee wrote a letter to facebook questioning about the nature and legality of it's cryptocurrency project code named Libra.
https://www.banking.senate.gov/imo/media/doc/5.9.19%20Facebook%20Letter.pdfThey essentially asked whether it would enable users to have privacy and would make it harder for the government to monitor every personal and financial moves of people in the US and around the world.
And what is the meaning of their cryptocurrency, if the user data will be revealed? They could pay the user and in dollars, euros. On the cryptocurrency want to raise their capital all.