The chances of the US banning cryptocurrencies are very slim right now (especially, when the US is enforcing taxation of crypto income). With centralized exchanges dominating the market, taxing crypto becomes a no-brainer. The American government can tighten regulations if criminal activity on crypto increases at an unprecedented rate. Things would've been different if the entire crypto/Blockchain space was completely decentralized (especially crypto exchanges). The United States know that cryptocurrencies are more beneficial to the US Dollar than harmful. Stablecoins pegged to the value of 1 USD proves this. Companies and businesses are adopting crypto at a fast pace, so it's best for the US to continue to support crypto than go against it. Some countries which "banned" crypto some time ago, are now starting to embrace it (like India, recently). Unless, every single cryptocurrency adopts privacy mechanisms to preserve anonymity, the revolution won't be going anywhere soon. Just my opinion