Intelligence Squared
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How will Trump’s tariff war impact the global economy? With Philip Coggan

What happens when the world’s biggest economy turns its back on global trade? In today's episode, host Adam McCauley is joined by renowned financial journalist and economist Philip Coggan to examine the far-reaching consequences of Donald Trump’s trade war. Drawing parallels with Churchill’s ec

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Episode Summary

Executive Summary: Philip Coggan argues that Trump’s 2025 trade policy is a serious economic mistake: tariff formulas are arbitrary, tariffs are paid mainly by domestic firms and consumers, and the approach damages alliances, institutions, investment, and U.S. credibility. He contrasts this with trade theory, historical lessons, and the need for immigration, welfare, and innovation policy to support real growth.

Main Topics: Trump’s tariff regime as policy error (Priority: 5/5): Coggan says the April 2 tariff announcements were based on a crude, nonsensical formula that ignored real trade structure, services, and year-to-year variation, making the policy economically unserious. Who actually pays tariffs (Priority: 5/5): He explains that tariffs are taxes formally paid by importers but largely passed through to U.S. consumers and businesses, raising prices and weakening competitiveness. Globalization and supply chains (Priority: 4/5): The discussion stresses that modern economies rely on international supply chains; tariffs on imports of components and raw materials raise costs for U.S. producers rather than protecting them. Manufacturing nostalgia vs economic reality (Priority: 4/5): Coggan argues Trump’s MAGA vision is backward-looking, since manufacturing employment has fallen for decades because productivity rose, not because trade alone hollowed out industry. Damage to institutions and alliances (Priority: 5/5): He warns that Trump is undermining the WTO, the Federal Reserve’s credibility, NATO-style cooperation, and the broader soft power that has underpinned the postwar order. Immigration, labor, and growth (Priority: 4/5): The conversation frames anti-immigration policy as economically self-defeating: immigrants expand demand, fill skill gaps, and support both high-skill and low-skill sectors. How to compete with China (Priority: 4/5): Coggan argues the U.S. should answer China with allied coordination, research, universities, and industrial strategy—not broad tariffs or attacks on scientific funding.

Key Arguments: Trump’s tariff formula is arbitrary and fails basic economic tests because it targets goods, ignores services, and treats bilateral trade balances as if every country should be balanced individually. Tariffs are taxes; the formal payer is the importer, and the economic burden typically falls on U.S. consumers and firms through higher prices. Modern trade is built on specialization and supply chains; tariffs on components and raw materials make domestic producers less competitive. Manufacturing employment cannot simply be restored to the 1950s/60s because productivity gains mean more output with fewer workers, as with farming. Many U.S. wage and inequality problems are driven more by domestic policy choices—weak welfare, low labor protections, declining unions—than by foreign trade. Trump’s anti-globalization approach alienates allies and makes coordinated pressure on China harder, instead of building a coalition. The WTO, Fed cooperation, and U.S. soft power are being weakened, making future financial or political crises harder to manage. Immigration supports economic growth by enlarging the workforce, increasing demand, and supplying both high- and low-skill labor. If the U.S. wants to compete with China, it should protect research and universities, fund innovation, and support industrial policy rather than cut science funding. Subsidies and targeted industrial support are presented as better tools than tariffs for building domestic capacity and absorbing globalization’s losers.

Data Points: Tariff formula date: April 2, 2025 - The announcement Coggan identifies as the trigger for writing the book quickly. Pharmaceutical tariff proposal: 200% - Used to illustrate how tariffs would sharply raise U.S. consumer prices. Example tariff math: $50 item + $100 tariff = $150 total - Coggan’s explanation of how a 200% tariff would affect an imported drug or good. U.S. imports that are components/raw materials: 45% - He says nearly half of U.S. imports are inputs used to make domestic goods. U.S. manufacturing jobs under Biden: 600,000 more - He cites Biden as having increased manufacturing employment, partly through subsidies and post-pandemic recovery. Top 10% share of U.S. wealth: 79% - Used to argue U.S. inequality is unusually high compared with other OECD countries. Gap vs other OECD countries: 16 percentage points higher - The top 10% wealth share in the U.S. exceeds other OECD countries by this margin. Trade volume growth since 1945: 45-fold - He describes the expansion of world trade under the postwar GATT/WTO system. WTO appellate body: Effectively not operating - He says Trump stopped appointing members in his first term, weakening dispute resolution. Diaspora/technology contribution: About a quarter of unicorns run by foreign-born people - Used to show the economic importance of immigration and foreign-born entrepreneurship. Growth impact from slower immigration: 0.75 to 1.0 percentage points - He cites Dallas Fed research on the drag from reduced immigration on U.S. growth. NIH contribution to new drugs: 99% of all new drugs (2010-2020) - Used to defend basic research and federal science funding.

Pivotal Quotes: "For every complex problem, there is an answer that's clear, simple, and Wrong." — H.L. Mencken (quoted by Adam McCauley from the book): Closing summary of the episode’s critique of simplistic tariff politics. "A tariff is a tax. So we could call this the Trump tax." — Philip Coggan: Coggan’s explanation of who pays tariffs and why they usually burden domestic actors. "The damage is all being done internally." — Philip Coggan: His conclusion that the U.S. is undermining its own institutions, alliances, and growth strategy.

Implications: Listeners should expect higher prices, weaker growth, and more uncertainty if tariff-heavy, anti-immigration, anti-institution policies continue. Long term, U.S. competitiveness depends more on alliances, research, labor supply, and stable rules than on economic nationalism.

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