On this episode of The David Frum Show, The Atlantic’s David Frum examines how protectionism, once a fringe idea in U.S. politics, became central to modern Republican trade policy. He traces how President Donald Trump made tariffs a political weapon, and why these policies continue to carry political appeal despite their economic cost.

Then David is joined by the historian and trade expert Doug Irwin for a conversation about what tariffs actually do. Irwin explains how protectionist policies have repeatedly backfired in American history, why they persist, and how the U.S. abandoned the bipartisan free-trade consensus that lasted for nearly a century. The two discuss who really pays for tariffs, why tariffs rarely achieve their stated goals, and what it would take to rebuild political support for open markets. 

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