Individual states could do that now. Notice that the major tax incurred by a data center is state/local property tax. It's why they often go looking for places with a property tax break, so giving it to them on the condition of "no fossil fuels" could be a pretty viable strategy.
At least in the case of wind the federal government has attacked via the permitting process. That limits what states can do, cutting taxes doesn't help if you can't build at all.
