Arrgh! Noooo! That's what the taxers argued here in TN when they tried to impose a state income tax on us. Fortunately enough folks realized that the slight reduction in our federal income tax would be more than offset by the hugh income tax about to be imposed on us. Now that we can deduct our (high) state sales tax, that argument is gone, helping to keep TN income tax (at least on wages) free.
I am surprised at Freepers seeming to buy into the line that if some get a tax deduction it hurts those who do not. Remember, it's our money! It does not hurt me in the slightest if you get to keep more of your own money.
to be honest, I don't really oppose it. I only said that because the political issues would not be good - sure it would be great for Florida, but people in other states would feel it was a political move to buy votes there.