In a move that could reshape international trade relations, US Treasury Secretary Scott Bessent has indicated that the United States is poised to implement a 15% global tariff this week. This announcement follows a series of mixed messages from President Donald Trump regarding tariff rates, which have left businesses and foreign leaders seeking clarity on the US’s trade stance.
Tariff Confusion: A Timeline of Events
The latest tariff proposal is designed to replace the extensive global import taxes introduced by Trump last year, which were invalidated by a Supreme Court ruling. In response to this legal setback, the White House enacted a 10% tariff, although Trump had previously stated on social media that the rate would be 15%. This discrepancy led to widespread uncertainty, prompting calls from various sectors for a clearer directive.
Bessent has assured stakeholders that the administration is in the process of finalising the necessary documentation to align the duties with Trump’s original statements. Officials have downplayed the Supreme Court’s ruling, suggesting that alternative legal avenues are available to restore their tariff policies. They argue that these measures are essential for rebalancing trade, enhancing domestic manufacturing, and reducing the national debt.
New Legal Framework for Tariffs
To impose the current 10% tariff, the White House utilised an unusual trade authority outlined in Section 122 of the Trade Act. This provision allows the president to declare a tariff of up to 15% without congressional approval for a duration of 150 days, given specific conditions are met. Bessent expressed confidence that tariff rates could return to previous levels within five months, maintaining that the Supreme Court ruling would not significantly impact the revenue generated from tariffs.

However, the administration is now grappling with potential claims from companies that previously paid the tariffs now deemed invalid. Estimates suggest that the government may owe up to $130 billion (£97.2 billion) in refunds. Furthermore, a report from the Cato Institute warns that taxpayers could face daily interest costs of $23 million on delayed refunds, accumulating to around $700 million per month.
Future of Tariff Policies Under Trump
The uncertainty surrounding US import tax policies remains a pressing concern. Last April, Trump introduced “Liberation Day” tariffs that affected numerous nations, with rates starting at 10% and soaring as high as 50% in certain cases. These tariffs prompted a wave of trade negotiations as countries sought to secure more favourable rates in exchange for commitments to investment and other reforms. However, the Supreme Court’s recent ruling invalidated these tariffs, as well as several others related to imports from Canada, Mexico, and China, citing the use of emergency powers.
In a bid to circumvent the ruling, Trump announced a 10% global tariff, later claiming he would increase it to 15%, although it was eventually enacted at the lower rate. This uniform tariff, with exceptions for certain goods, has levelled the playing field for shipments from all countries and raised questions about previously negotiated agreements with allies like the UK.
Sector-Specific Tariffs on the Horizon
As the administration looks to solidify its tariff regime, it plans to leverage other legal tools, specifically Sections 301 and 232 of the Trade Act. These provisions enable the US to impose targeted tariffs on specific countries or industries, often in response to unfair trade practices or national security concerns. Historically, Trump has utilised these tools to impose tariffs on metals, automobiles, and other products, and he is expected to consider them in ongoing disputes over digital taxes and pharmaceutical imports.

Importantly, these mechanisms require the administration to follow a more structured process, including conducting investigations and allowing businesses time to respond to proposed tariffs. Many in the business community have expressed a preference for this approach over Trump’s abrupt policy shifts, as it provides additional time to adapt to potential changes.
Why it Matters
The impending changes to US tariffs could have significant implications for both domestic and international markets. With businesses and foreign governments monitoring developments closely, the uncertainty surrounding future tariffs could impact investment decisions, supply chains, and international relations. As the US seeks to recalibrate its trade policies, the outcomes of these decisions will resonate far beyond American shores, influencing global economic dynamics for years to come.