I think the politicians are targeting the company (Facebook) as a whole and not just the coin but its inevitable that crypto will soon run the finance world
Of course they are, they do not want to give more power to Facebook. As is, Facebook is already too powerful, if you add currency control in its table, it will be too powerful.
I think that it is good that US government wants to regulate this coin as early as possible.
Hopefully Libra will attract all government and regulatory attention and take the pressure off the pure coins.
That is if the government can distinguish stable coin from a decentralized coin. In my opinion, they see Libra and Bitcoin as the same. The worst would be they implement whatever regulation they come up on Libra to Bitcoin as well.