One year ago, the case for tariffs rested on four pillars: they would fund the government, decouple supply chains, rebalance trade, and give America negotiating leverage. I argued, using theory and history, that none of them held much water. But now we have something better to look at than theory or historical analogues: evidence.
On April 2, 2025, President Trump announced “Liberation Day,” where sweeping tariffs were imposed on nearly every country on earth, whether they were friend or foe, rich or poor, or (strangely) inhabited or uninhabited. The rates ranged from 10 to...