The USA government can do anything including banning crypto or closing doors on bitcoins in their country if supported by a law that has been passed in parliament. Government bans will not make citizens comply with government policies when it comes to crypto assets, after Bitcoin has existed in parts of the world for more than 10 years, many USA citizens in particular have been involved in Bitcoin trading. Their conscience has stuck with Bitcoin or other crypto assets, they have gained a lot of profit while plunging into the crypto market. The percentage of crypto asset users in the US is very large, they not only oppose the rules issued by the government, but are willing to go to other countries so they can do something that has been profitable for them so far.