Donald Trump’s tariff battle heads to U.S Supreme Court after court loss

U.S President Donald Trump’s administration has taken its high-stakes tariff battle to the U.S. Supreme Court, urgently requesting a fast-tracked review to preserve sweeping import levies that a federal appeals court declared illegal. The U.S. Court of Appeals for the Federal Circuit, in a 7-4 ruling, found that Trump overstepped his authority by using the 1977 International Emergency Economic Powers Act (IEEPA) to impose tariffs on nearly all U.S. trading partners, including “reciprocal” tariffs and specific duties on China, Canada, and Mexico to curb fentanyl trafficking. The tariffs, a cornerstone of Trump’s economic agenda in his second term, remain in place until October 14, giving the Supreme Court time to decide whether to take up the case. This legal fight, described as a potential “collision course” with the court, could reshape global trade and U.S. economic policy.

The tariffs, announced in April 2025, included a 10% baseline duty on most trading partners and up to 50% on countries like Lesotho, justified by Trump as a response to a $1.2 trillion U.S. trade deficit. Additional tariffs targeting China, Canada, and Mexico were framed as measures to combat drug trafficking. The appeals court ruled that IEEPA, historically used for sanctions or asset freezes, does not grant the president authority to impose tariffs, which the Constitution assigns to Congress. The court’s decision, backed by the Supreme Court’s “major questions” doctrine, emphasized that such significant economic actions require clear congressional approval. The ruling has sparked concerns about potential refunds of $159 billion in tariff revenue collected this fiscal year, impacting U.S. businesses and global trade deals.

Trump’s Justice Department, led by Solicitor General D. John Sauer, has urged the Supreme Court to hear the case by September 10 and schedule arguments for November, citing the tariffs’ role in national security and diplomacy. Treasury Secretary Scott Bessent argued that the appeals court’s decision undermines Trump’s ability to address trade imbalances and drug flows, warning of “financial ruin” if the tariffs are struck down. Trump himself called the appeals court “highly partisan” on Truth Social, expressing confidence that the Supreme Court, with its 6-3 conservative majority, will overturn the ruling. However, legal experts note that the court’s recent skepticism of expansive executive powers, as seen in cases limiting Biden’s student loan forgiveness, could pose challenges for Trump’s case.

The legal battle stems from lawsuits filed by 12 Democratic-led states and five small U.S. businesses, who argued that Trump’s tariffs, imposed without congressional approval, violated constitutional limits. The Court of International Trade in May 2025 initially ruled against the tariffs, a decision affirmed by the Federal Circuit. The appeals court’s 7-4 split, with dissenters arguing that IEEPA’s broad emergency powers support Trump’s actions, highlights the contentious nature of the case. If the Supreme Court upholds the lower court’s ruling, Trump could turn to alternative laws like Section 232 or Section 301 of the Trade Act, though these impose stricter limits on tariff scope and duration. The outcome could affect billions in trade duties and U.S. trade agreements with the EU, Japan, and others.

The tariffs have already disrupted global markets, with volatility spiking after their April announcement. Companies face uncertainty over supply chains and pricing, with logistics experts advising shippers to hold steady until the Supreme Court rules. Some, like Mike Short of C.H. Robinson, report clients seeking clarity on potential duty refunds, which could total billions if the tariffs are retroactively voided. Trump’s supporters argue the tariffs have brought manufacturing jobs back to the U.S., while critics, including economists, warn of higher consumer prices and strained trade relations. The case also coincides with a separate legal fight over Federal Reserve independence, setting up a broader showdown over Trump’s economic policies.

A Supreme Court ruling could come as early as late 2025 if expedited, but a decision might stretch into 2026, leaving global trade in limbo. Trump’s team remains optimistic, with White House spokesperson Kush Desai asserting the tariffs’ legality and their role in making America “rich, strong, and powerful again.” However, the court’s conservative majority, including three Trump appointees, has shown wariness of unchecked executive power, making the outcome uncertain. As the case progresses, it will test the balance between presidential authority and congressional oversight, with implications for U.S. economic strategy and international relations. For now, businesses and trading partners await clarity, while Trump’s tariffs continue to shape debates over America’s role in global trade.