Cryptocurrency is decentralized, this means that the government can't control or even shut down it. The only thing they can do is to prohibit crypto usage.
It is true about crypt being decentralized. It's the main reason why government have been at a disadvantage since trying to put an end for it for many years now. Their plans just keeps on failing. Their ability to stop crypto usage around a geographical location is bad too because you would be at the losing end if there's no clear option available on how you can convert some if not all of your coins to maybe fiat. This is why crypto users in US have difficulty accessing crypto services like the rest of us.