For instance, one way to pay for bringing the uninsured into the health-care system (a noble Democratic priority) is to scrap a distorting tax-deduction that veils the true cost of health insurance, a policy espoused by John McCain last year.
Romney has recently floated the idea of an individual-deduction cap, the savings from which could easily fund a universal health insurance tax-credit system, depending on how the cap was structured.
This is essentially the flat tax system with a twist: you are allowed to utilize certain deductions against the tax, including a deduction for dependents.