He is not looking to kill it, he is trying to impose the DAME tax, DAME means Digital Asset Mining Energy, and the idea is to start with this tax from 10%, then 20% in the next year and 30% on the 3rd year.
So, the plan isn't to ban the mining, but with those huge taxes, no one will want to mine there. Is not a good business. But i don't think congress will let that tax come to live, and if it does, they will stop it before the 3rd year, because other way people will start creating illegal farms.
Don't you think people who are mining bitcoin don't mind relocate to the country that is more favorable because I believe this isn't the sole purpose because for him to keep increase tax every single year shows that it's indirect killing therefore when it's much on people those who don't find it favorable don't quitting, and if he sees that people still instigating then he would have to turn the other way round just to make sure he entirely eliminate it.