If they make it retroactive to Jan 1st blue states are in big trouble, losing the SALT deduction would mean they have been paying far too little in federal taxes this year and will have to cough up a check to the government when they file.
You actually believe, that the SALT deductions will magically disappear for Year 2017 tax filers? Would care to make a bet?
Secondly, the SALT deduction lost will effect all states, not just the Blue States.
Which states would be the most affected?
Obviously Blue States. But still, the elimination of SALT will effect all taxpayers, in high and low state tax states.
And your point is?
It doesn't take a genius, to see the elimination of the SALT, is a partisan punishment. Also, most of the states that have higher SALT, are states that pay in more than they get back from the Federal government. While the states that get more back than they pay in, aren't punished.
I guess you Trumpsters want the country's most livable states, to end up being like Mississippi, which has the worse livable standards in the country.