This is about State taxes, not Federal. It is not false.
It's about the deductibility of state taxes on Federal tax returns. The comment about high-tax states enjoying a "subsidy" from the rest of America would be meaningless if they were referring to state taxes.
These people need to hold their “representatives” responsible for this new tax law that was passed while they were all trying to obstruct the president instead of help with the law. They did nothing to help and were all crying when a bill passed that they didn’t like. Suck it up.