Economist Brent Neiman recently returned to UChicago from his position as Deputy Undersecretary for International Finance at The US Treasury, only to find his research being used (and misused) in the Trump administration’s sweeping new tariff policy. In this episode, Neiman walks us through what the original study actually showed, how it got misinterpreted, and why today’s tariff regime marks one of the most consequential trade shifts in decades.