I think many people in USA will have an alternative in the person of Trump, because he has made promises concerning cryptocurrencies and although it is a political plot, he mentioned his support for the crypto community.

Also, there was a time I read about some mining companies in the U.S moving their old mining machines to Colorado springs for refurbishment, and possible resale to investors and miners willing to own these machines and operate them in more economic friendly regions with cheaper electricity tarrifs and data consumption cost. Infact the goal was just to move to areas where it would be cheaper to manage a mining farm.

Whatever Biden is doing is only a bump in the road because the American community already regulates Crypto currency and if they decide to tax it at 30%, then there might be an issue of massive relocation from the country and a drop in the macro economy, since many companies accept it already and would find it hard to stop using it because of taxes.