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.