Congress want to ban libra in any way
Well, obviously. When you have something disruptive to your monetary industry which offers control over other people, analogous to a religion, you would want to remove it as quickly as possible.
It's clear.
I think they do the right thing. Congress has its own reasons because a large enterprise like Libra that operates in a decentralized market is likely to cause major problems for the US economy and its neighbors. In the United States, they always control businesses very closely and Libra is really out of control of a normal business. so I have no idea unless Facebook is going to publish the internal balance sheet regularly for the SEC.