Fuzzy Math Among President Trump’s various assertions in last night’s State of the Union address was that tariffs would someday replace the income tax, but that is a mathematical impossibility. The value of imported goods is around $3 trillion, and the income tax generates nearly $5 trillion. Applying the necessary 166 percent tariff would inherently reduce imports and thus cause a shortfall in government revenue. Tariffs rose 186 percent in 2025, and the resulting revenues increased from $170 billion to about $270 billion, but imports fell from the country where tariffs were applied most heavily—China. And the tariff rate applied to China was 23 percent. It would require a 165 percent tariff on $3 trillion worth of import...