In a bold response to a recent Supreme Court decision that invalidated his previous tariffs, US President Donald Trump has revealed plans to impose a global tariff rate of 15% on imports. This announcement, made via Truth Social, marks a significant shift in his trade policy, as the administration seeks to navigate the complexities of global trade regulations while maintaining economic objectives.
Tariff Adjustments and Legal Framework
Following the Supreme Court’s 6-3 ruling, which concluded that Trump had overstepped his authority with previous tariffs imposed under the International Emergency Economic Powers Act (IEEPA), the President vowed to replace the now-invalidated tariffs with a new 10% levy effective from Tuesday, 24 February. However, just a day later, he indicated that this would be increased to the maximum permissible under a rarely invoked provision of the 1974 Trade Act, allowing the new tariffs to remain in place for approximately five months without immediate congressional approval.
The newly announced 15% import tax raises significant questions for nations such as the UK and Australia that had previously negotiated a 10% tariff agreement with the US. Trump’s administration has stated that these tariffs will apply broadly, although certain categories, including critical minerals and pharmaceuticals, may be exempt.
Reactions from Business Leaders and Political Figures
The implications of this tariff increase have elicited varied responses from business leaders and political commentators. Drew Greenblatt, a steel manufacturer in Baltimore, expressed disappointment, stating, “It is a setback for poor people in America that had a chance to climb into the middle class with great manufacturing jobs.” Conversely, Virginia soybean farmer John Boyd celebrated the ruling as a significant victory for agricultural producers, claiming it represents a “huge win for me” and a “big loss for the president.”

Allie Renison, a former UK government trade adviser, warned that the new tariff structure could complicate trade relations further, stating, “Trade actually just got a lot messier.” Under the Trump administration’s approach, many US businesses will now face a convoluted landscape of tariffs, complicating import processes and impacting operational costs.
International Response and Future Implications
The international community is closely monitoring the unfolding situation. French President Emmanuel Macron has indicated that France will adapt to the new trade environment, emphasising the need for reciprocal trade rules rather than unilateral decisions. Similarly, German Chancellor Friedrich Merz expressed concerns over the uncertainty surrounding tariffs, asserting that “the biggest poison for the economies of Europe and the US is this constant uncertainty about tariffs.”
As the administration navigates these new tariffs, companies and trade associations are mobilising to seek refunds for previously imposed, now deemed unlawful tariffs. The Supreme Court’s ruling has opened the door for potential reimbursement claims, although the process may be fraught with legal challenges. Neil Bradley, chief policy officer at the US Chamber of Commerce, highlighted the urgency of facilitating swift refunds, which could provide a vital economic boost for small businesses facing operational strains.
Why it Matters
The decision to elevate global tariffs to 15% encapsulates a critical moment in US trade policy, with far-reaching implications not only for American businesses but also for international relations and global economic dynamics. As the administration grapples with the legal, economic, and diplomatic repercussions of this tariff strategy, the potential for increased trade tensions looms large, raising concerns about the overall impact on global economic growth and stability.
