I think the reason it was done was to pressure States with high taxes like California and New York. It will force them to lower their taxes or risk losing people leaving the State to more tax friendly states like Florida or Texas.
That will never happen.
The states don't care about families and people that work. We are only a well to be run dry for them.
As I said again, and again, and again during the entire Tax Bill debate, it gives a massive tax break to Facebook, Google, Twitter, and Amazon, and raises taxes on millions of us.
Nice.