But note again that the largest group excluded from paying income tax because of special tax expenditures are seniors, who get a bigger standard deduction than younger folks and more importantly, special tax treatment for their Social Security benefits.

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Cato health policy analyst Michael Cannon noted that special interests successfully lobbied to require several new benefits, including drug-abuse treatment, early intervention for autism, hospice care, hormone replacement therapy, and non-in-vitro fertility services.

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