Weighing the economics of Abraham Lincoln isn’t easy to do in today’s terms. Lincoln was pro-subsidy and pro-tariff, both of which stances tend to be assigned to the interventionist left in today’s discussions. But Lincoln’s infrastructurally and financially primitive economy was not ours, and it’s worth thinking about how he might govern today given that in his words there is an unshakeable faith in free enterprise. Lincoln was pro-business, laudatory of wealth creation (and the inequality that goes with it), against class warfare and in favor of exploiting natural resources. “Property,” he said in 1864, “is the fruit of labor...