As for banning bitcoin, that is even more impossible, the world is becoming increasingly multipolar, not every country is an ally of the US and willing to follow their orders. The United States alone will not be able to do anything about bitcoin, or even with allies involved, they will be unlikely to completely stop bitcoin. There will still be countries that oppose the United States and continue to maintain bitcoin.
I hope that we can make some changes, and for that to happen we need to arrange a situation that could be a little different compared to everyone else, can't be really all that easy to let governments take our coins. Lets assume I have my money in my wallet, they told me that I need to give it up, what if I don't? They can't take it from me, so it is going to be pretty obvious that they are going to end up with nothing at all.