After running all the numbers under conditions that were very, very favorable to Mitt Romney’s tax plan, the nonpartisan Tax Policy Center concluded that there was simply no mathematical way for Romney to fulfill all his promises simultaneously.

But more recently, Harvard economist Martin Feldstein has said they’re wrong. Feldstein leans to the right — he chaired President Ronald Reagan’s Council of Economic Advisers — but he’s a very respected, very honest economist. No one should dismiss his work.

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