How US Economic Policy Is Interacting with the Global Economy Today

Brown Watson Institute
Brown Watson InstituteMar 10, 2026

Why It Matters

Understanding the real, network‑mediated impact of U.S. tariffs helps firms and investors gauge inflation risk, currency volatility, and long‑term productivity losses, informing strategic decisions in an increasingly uncertain trade environment.

Key Takeaways

  • Tariffs act as simultaneous demand and supply shocks.
  • Recent US tariffs have modest average rates, limiting inflation impact.
  • Network effects dampen tariff transmission through global supply chains.
  • Persistent tariff levels could raise inflation by ~0.5% and cut output 1%.
  • Policy uncertainty drives dollar depreciation and broader market volatility.

Summary

In this episode of Trending Globally, Brown University’s Watson School dean John Friedmann interviews Professor Shbnam Kily Orojan to dissect how recent U.S. tariff shifts and broader economic policy are reshaping the global economy. The conversation traces the evolution from Trump‑era 25% duties on Mexican and Canadian goods to a patchwork of exemptions, walk‑backs, and a Supreme Court ruling that recently nullified many of the broadest tariffs, highlighting the volatile policy environment.

Orojan explains that tariffs function as both a demand shock—discouraging foreign consumption—and a supply shock—raising the cost of imported inputs such as steel, aluminum, and semiconductors. Because the average effective tariff rate now hovers between 10% and 15%, far below the 25%‑plus peaks of 2022, the immediate inflationary pressure has been muted. Moreover, she stresses that global production, trade, and financial networks absorb and diffuse the shock, delaying its impact on prices and output. Her estimates suggest a steady 10‑point tariff increase could add roughly 0.5 percentage points to inflation, shave about 1% off U.S. output, and eliminate 1‑1.5 million jobs over the long run.

The discussion is peppered with vivid analogies—a “skiing downhill” metaphor for inflation’s post‑pandemic descent and a “stock‑price” view of the dollar’s reaction to tariff uncertainty. Orojan points to the April 2 dollar depreciation following the “Liberation Day” announcement as evidence that unpredictable trade policy can outweigh the traditional terms‑of‑trade gains that usually strengthen the currency. She also revisits the “China shock” narrative, noting that while trade liberalization displaced manufacturing jobs, it simultaneously lifted billions out of poverty, underscoring the complex trade‑off between economic integration and social disruption.

Overall, the interview warns that while short‑term price effects appear limited, the cumulative, network‑mediated drag on productivity and employment could be substantial if tariff levels remain elevated. Policymakers must weigh the modest fiscal gains against the broader costs of uncertainty, currency volatility, and potential erosion of global supply‑chain resilience, especially as the U.S. navigates a post‑pandemic, geopolitically tense landscape.

Original Description

On this episode, Watson School Dean and economist John Friedman talks with economist Sebnem Kalemli Ozcan about how U.S. economic policy in the last year has changed the American economy, how those changes have rippled throughout the global economic and financial system, and what it means for America’s place in a rapidly evolving international order.
Sebnem Kalemli Ozcan is a professor of economics at Brown and the director of the Global Linkages Lab, a collaborative research hub dedicated to deepening our understanding of globalization. Starting in July, she'll also be serving as the director of the Watson School’s Rhodes Center for International Economics and Finance.
John Friedman is Vascellaro Family Dean of the Watson School, and Briger Family Distinguished Professor of Economics and International and Public Affairs
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Transcript coming soon to our website.

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