Asia’s major US trading partners face renewed uncertainty after the US Supreme Court declared many of President Donald Trump’s 2025 tariffs illegal. Trump responded by announcing fresh 15% levies on all goods entering the US. US Customs announced on Monday it will pause collection of tariffs tied to Trump’s key trade policy, which ignited a global trade war.
This decision delivers a significant setback to nations from India to Indonesia, which invested months negotiating deals with Washington and committed billions in US investments.
Analyst Insights on Lingering Risks
The shift to a 15% rate offers relief to countries previously facing steeper duties, yet substantial questions persist. “Even if countries negotiate, the current US administration aims to enforce higher tariffs regardless of invalidated measures,” states Adam Samdin of Oxford Economics. Recent US trade deals lack the robust legal protections of traditional agreements, opening doors to alterations, he notes. Smaller Asian economies remain wary of alienating the Trump administration, as outcomes hinge on bilateral ties, Samdin adds.
Reactions Across the Region
Governments scramble to assess impacts. China, set to host Trump in early April, conducts a full review of the ruling’s effects. “China opposes all unilateral tariff hikes and stresses that trade wars yield no victors while protectionism fails,” a Commerce Ministry spokesperson declares.
US Trade Representative Jamieson Greer downplays disruptions to upcoming talks with China’s Xi Jinping. “This meeting focuses on stability, ensuring China fulfills commitments to purchase US agricultural goods, Boeings, and more—not trade disputes,” Greer states. “It won’t impact that agenda.”
Japan vows close scrutiny. A government spokesperson says Tokyo will analyze the ruling and Washington’s reply before acting. Itsunori Onodera, a Liberal Democratic Party executive and ex-defense minister, warns on a Sunday TV broadcast: “As an ally, this risks pushing nations further from the US.”
South Korea’s Industry Minister Kim Jung-kwan highlights refund uncertainties for paid tariffs and confirms exemptions for computer chips. Taiwan, a chip powerhouse, deems direct effects minimal but pledges vigilant monitoring and US dialogue. Singapore, now at 15% from 10%, tracks developments and plans US talks. Its trade ministry expects exemptions for pharmaceuticals, electronics, and energy products.
Recent Deals and Broader Impacts
Trump’s April “Liberation Day” tariffs hammered export-driven Asian economies. Recent pacts eased burdens: Indonesia cut rates to 19% from 32% for market access; Taiwan secured 15% via major investments; Japan advanced rare earths production to reduce China reliance.
Greer affirms commitments endure. “We stand by these agreements, and partners must reciprocate,” he declares in another interview.
A universal 15% rate will sting exporters of finished goods hardest, per Sandra Alday of the University of Sydney. Effects on semi-processed imports prove trickier to predict. Overall, US-bound foreign goods grow pricier. This levy, under Section 122 of the Trade Act, lasts about five months pending congressional nod, also querying prior 10% deals with the UK and Australia.

