Key Highlights

  • The US Supreme Court ruled in February 2026 that Trump exceeded his authority using emergency powers to impose tariffs.
  • New tariffs of 10 to 12.5 percent now apply to goods from the top 60 US trading partners under different legal authority.
  • A Goldman Sachs study estimated that about 55 percent of tariff charges have been passed on to US consumers.
  • US imports increased 4 percent in 2025 despite the new trade barriers.

A Persistent Policy Tool Facing Legal Challenges

Tariffs have remained one of President Trump's primary economic tools since returning to the White House, with the administration arguing that these import taxes boost US manufacturing, create jobs, and correct trade imbalances with countries that sell more to the US than they buy from it. Critics counter that the policy has raised prices for American consumers and disrupted the global economy.

The policy faced a significant legal setback in February 2026, when the US Supreme Court ruled that Trump had exceeded his authority by using emergency powers under the International Emergency Economic Powers Act to introduce tariffs on specific countries without congressional approval. The ruling affected the first tariffs announced in early 2025 targeting Mexico, Canada, and China, as well as the broader so-called Liberation Day tariffs of up to 50 percent announced that April, resulting in tens of billions of dollars being refunded to affected companies.

New Legal Authority Sustains the Tariff Regime

Despite the Supreme Court setback, the tariff policy has continued through alternative legal mechanisms. After the ruling, the administration used Section 122 of the Trade Act of 1974 to impose temporary 10 percent tariffs on all global imports, which expired on July 24 but have since been replaced by tariffs of 10 to 12.5 percent on goods from the top 60 US trading partners, including the UK, the EU, and China, this time invoked under Section 301 of the Trade Act based on claims that trading partners have failed to properly address forced labor.

One trade expert characterized this justification as less about forced labor and more about the administration seeking any available legal pathway to maintain tariffs. The administration has also used Section 301 to impose a 25 percent tax on certain Brazilian goods over trade practice claims, and separately invoked Section 338 of the Tariff Act of 1930 to impose a 50 percent tariff on a range of Canadian imports in response to what Trump described as unequal treatment of US cars, dairy, and alcohol. Steel imports illustrate the policy's uneven application, with UK steel facing a 25 percent duty compared to the 50 percent rate applied to steel and aluminum from the rest of the world, even as the US remains the world's second largest steel importer after the EU, drawing most supply from Canada, Brazil, Mexico, and South Korea.

Balancing Consumer Price Impact Against Promised Long Term Investment

The tariffs' effect on US consumers has become a central point of contention, with companies including Target, Walmart, and Adidas stating they would pass tariff costs on to customers. A Goldman Sachs study from October 2025 estimated that approximately 55 percent of tariff charges had been passed on to US consumers, while a Federal Reserve study in April found that the sweeping 2025 tariffs had contributed to a surge in inflation.

The White House has maintained that the tariffs will take time to pay off, pointing to firm and country commitments to increase US investment as evidence of the policy's longer term benefits. Notably, US imports actually increased 4 percent in 2025 despite the new trade barriers, a data point that could support the administration's case that trade flows have adapted rather than collapsed, though it also raises questions about how effectively the tariffs are achieving their stated goal of reducing the trade deficit.

Conclusion

Trump's tariff policy has proven durable despite a significant Supreme Court setback, with the administration successfully identifying alternative legal authorities to sustain and even expand the tariff regime across dozens of countries. Whether the policy ultimately achieves its stated goals of reducing the trade deficit and boosting domestic investment may become clearer as more data accumulates on consumer prices, import volumes, and foreign investment commitments. The International Monetary Fund's assessment that the tariffs have slowed global economic activity suggests the policy's international costs remain a significant consideration alongside its domestic economic aims.