Whereas I believe the govt is discriminating against states with high taxes, I really like the "cause and effect" argument posed by SaraEA. The harm HAS COME from the state governments themselves. The federal tax law is simply picking and choosing which states to subsidize.
Over the weekend I listened to a radio show featuring an EA who had attended the IRS blowout in Las Vegas. [Funny how they dislike business travel deductions to tourist resorts such as Myrtle Beach, Orlando, Niagara Falls, etc. when it comes to themselves they really love to go to Vegas] Apparently there has been a lot of noise from constituents getting hit hard because of job expenses and the loss of the 2% category, and the general feeling is further tax relief is to come for this group.
Every group of "lobbyists who come out in force" to champion a favorite deduction also increases the deficit.