If the deduction is removed, presumably the tax rate could be adjusted downwards to compensate.
Arguably, it would make more sense to allow a deduction on state income tax for federal tax paid. That way the federal tax -- which (in theory, at least) pays for services that benefit all states -- is imposed consistently across all the states. Individual states can then decide how much to tax their citizens to pay for the state's local services, without skewing how the federal tax burden is applied.
Arguably, it would make more sense to allow a deduction on state income tax for federal tax paid. That way the federal tax -- which (in theory, at least) pays for services that benefit all states -- is imposed consistently across all the states. Individual states can then decide how much to tax their citizens to pay for the state's local services, without skewing how the federal tax burden is applied.