U.S. Modifies Tariffs After Court Rules Global Levies Illegal

The federal government of the United States implemented an aggressive protectionist trade agenda starting in early 2025, raising average tariff rates from 2.5% in January to 18.6% by August. These measures, utilizing the International Emergency Economic Powers Act and Section 232 of the Trade Expansion Act, targeted China with an average 57.6% tariff, while Canada and Mexico faced levies between 25% and 35%.

On August 29, 2025, the U.S. Court of Appeals for the Federal Circuit declared most of President Donald Trump's global tariffs illegal. In response, the U.S. government issued an Executive Order on September 8 modifying reciprocal tariffs and rolling back levies on products that cannot be produced domestically in sufficient quantities. The Supreme Court of the United States is scheduled to hear the legality of the global tariffs in November.

International reactions have been severe. China imposed retaliatory tariffs on U.S. exports reaching 32.6% by May, and later announced 15% tariffs on American agricultural products. Canada imposed 25% tariffs on over $20 billion of U.S. imports, though it removed most CUSMA-covered duties on September 1. Mexico announced import taxes of up to 50% on Chinese and Asian products effective September 10.

These tensions, compounded by Middle East instability and Israeli airstrikes on Iranian nuclear facilities in June, have disrupted supply chains and inflated costs. The IMF warned of a potential 0.7 percentage point reduction in global GDP for 2025, while companies like Procter & Gamble plan price increases on roughly 25% of their products.