The customs duties data for the United States was recently updated, and we can assess the “success” of Trump 2.0’s tariff policies so far. On an annualised run rate, customs duties were 0.88% of GDP in the second quarter (the latest monthly figure Treasury I saw was around $350 billion annualised versus the $267 billion BEA second quarter figure).

The rise of tariff revenue is rapid, but the magnitude is relatively small so far. As such, it is not entirely surprising that there has not been a mas...