The global tariff policy championed by U.S. President Donald Trump suffered a significant setback on February 20, 2026, when the Supreme Court ruled that the Executive branch had exceeded its authority in implementing them.
In a six-to-three vote, the justices rejected the President’s use of a law intended for national emergencies to increase tariffs on dozens of countries.
The White House had imposed these tariffs in April, arguing that the International Emergency Economic Powers Act (IEEPA) granted the President the authority to do so. However, the Supreme Court ruled that this interpretation was incorrect and that, in applying it, the Executive branch was infringing upon Congress’s powers.
The ruling applies to tariffs imposed by Trump on April 2, 2025, during what was called the “Day of Reciprocity,” but does not affect individual tariffs imposed on specific countries or products.
At that time, the President imposed reciprocal tariffs on dozens of countries worldwide, including the largest economies, accusing them of unfair trade practices toward the U.S.
The tariffs announced that day involved a minimum 10% tax on all imports entering the U.S. And affected most countries in Latin America.
Friday’s ruling leaves much of the reciprocal tariffs announced in April without legal standing, as well as other tariffs imposed by the U.S. On countries like Mexico, Canada, and China, based on their alleged responsibility for trafficking illicit drugs like fentanyl.
Trump has been a proponent of tariffs for years, arguing they will boost U.S. Manufacturing. However, many in the business community and among Trump’s political opponents disagree.
Controlling Presidential Power
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The decision regarding the tariffs is notable for being made by a Supreme Court with a conservative supermajority that had, until now, allowed Trump to broadly use executive powers. According to BBC North America correspondent Anthony Zurcher, the court’s decision represents an unusual check on the President’s extensive use of executive authority.
President John Roberts, who authored the ruling, warned that allowing the Trump administration to proceed with its tariff agenda would “replace the historical collaboration between the executive and legislative branches in trade policy with an unchecked formulation of presidential policies.” He added, “the President must show ‘clear authorization from Congress’ to justify his extraordinary assertion of the power to impose tariffs. He cannot do so.”
The ruling was supported by the three liberal-leaning justices (Ketanji Brown Jackson, Elena Kagan, and Sonia Sotomayor), as well as three conservative-leaning justices (Amy Coney Barrett, Neil Gorsuch, and John Roberts). Three conservative justices opposed the decision (Brett Kavanaugh, Samuel Alito, and Clarence Thomas).
A Novel Stage of Uncertainty
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The Supreme Court’s decision derails the current trade strategy of the Trump administration, but does not necessarily end it. BBC International Business Correspondent Theo Leggett points out that this is not the only legal avenue the government has used to impose additional tariffs since Trump took office, and there are other laws it could employ to reimpose them if it wishes.
“Given the President’s clear enthusiasm for tariffs as a negotiating tool, it is unlikely we will see a major shift in White House policy,” Leggett notes, adding that these other methods may require Congressional approval or investigations by the Department of Commerce, and therefore will likely take more time.
It is also unclear whether the current tariffs will be reduced to pre-2025 levels following this decision. After intense negotiations following the Day of Reciprocity, the average tariff rate faced by countries selling to the United States stabilized around 15%. The Supreme Court decision has – in theory – reduced that typical rate to less than half. However, it remains above 6% – around three times the typical rate at the beginning of 2025 – due to tariffs imposed under other pretenses, according to BBC News Economics Editor Dharshini David.
David also points out that many importers may not notice significant differences in the tariffs they pay, as many of them reoriented their supply chains to find new suppliers and move away from the countries most affected by these taxes in response to Trump’s measures.
It is also unclear whether the tariffs have been useful in reducing the U.S. Trade deficit, one of Trump’s concerns. Although it decreased from $903 billion in 2024 to $901 billion in 2025, the trade deficit in goods increased from $1.20 trillion to $1.24 trillion, according to information released Thursday by the U.S. Census Bureau.
Frequently Asked Questions
What did the Supreme Court rule on February 20, 2026?
The Supreme Court ruled that the President exceeded his authority when imposing tariffs on dozens of countries, finding that he improperly used a law intended for national emergencies to justify the tariffs.
What is IEEPA?
IEEPA stands for the International Emergency Economic Powers Act. The White House argued this law gave the President the authority to impose tariffs, but the Supreme Court disagreed.
Does this ruling eliminate all tariffs imposed by the Trump administration?
No, the ruling specifically applies to tariffs imposed on April 2, 2025, and other tariffs imposed under the same legal justification. It does not affect individual tariffs imposed on specific countries or products.
As the legal landscape shifts, will the Trump administration alter its approach to trade policy?
