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Mitt Romney

Republican field pushes tax cuts bound to drive up debt

Republicans came into this presidential campaign with painful memories of how, in the last one, Democrats blasted Mitt Romney's tax plan as a giveaway to the rich.

Yet Donald Trump's tax plan adds to the number of major GOP presidential candidates who propose to cut all taxes — but especially those for the wealthy — as deeply, or deeper, than Romney proposed.

The lesson Republicans seem to have drawn is to simply stop worrying about balancing the budget. The plans would blow open deficits over the next decade that economists estimate ranging from $3.6 trillion to $12 trillion.

Oren Cass, who was Romney's domestic policy adviser, noted the former...