Businessman Herman Cain, who has his poll ratings surge in recent weeks, proposes a "9-9-9" tax plan that would replace the current code with a 9% income tax, business tax, and a national sales tax.

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And, according to the plan, it would do so while pretty much retaining the progressivity of the current code.

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The proposal is part of a larger plan that would reform the federal tax code, lowering the corporate tax rate from its current 35% while cutting deductions, credits, and other breaks.

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