Libra seems to be designed to be resistant to regulation.
Facebook is only one member of the Libra government board. The other members are from various finance and venture capital firms. In theory Libra could be shut down by US and European regulators. However, if Libra is a truly distributed crypto currency, it would be difficult for regulators to suppress it since there is no single geographic location.
All this said… As the developer of nderground.net, I certainly agree that anything that Facebook does should be viewed with caution and skepticism.