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WASHINGTON, January 9, 2026 – A Supreme Court decision, expected as early as tomorrow, could force the U.S. government to refund over $133.5 billion in tariffs,potentially dismantling a key part of President Trump’s economic policy and sparking a major debate over presidential authority.
Tariff Ruling Looms: Billions at Stake
The high court’s decision on the legality of Trump-era tariffs could reshape trade policy for years to come.
- The Supreme Court is poised to rule on the legality of tariffs imposed under the International Emergency Economic Powers Act.
- Betting markets currently give President Trump a 28% chance of winning the case and maintaining control over tariff policy.
- A ruling against the tariffs could trigger a massive refund of over $133.5 billion and raise questions about the federal budget.
The stakes are incredibly high. A ruling against the governance would not only be a significant financial hit, but also a major setback for trump’s broader economic agenda. The President himself acknowledged the potential impact, calling a negative ruling a “terrible blow” to the U.S. in a recent social media post.
What happens if the Supreme Court rules against the tariffs? The answer isn’t simple. Beyond the immediate question of refunding the collected tariffs, a cascade of questions arises: When would the money be returned, how would the payments be structured, and what policies would replace the existing tariffs?
Currently, betting markets aren’t optimistic about the President’s chances. At Kalshi, the crowd is pricing in a 28% probability that Trump will prevail and continue to wield broad authority over U.S. tariff policy by invoking the International Emergency economic Powers Act. Polymarket’s estimate is even lower, at 24% this morning.
The legal challenge centers on whether the President overstepped his authority by using the nearly 50-year-old International Emergency Economic Powers Act to impose tariffs – a power traditionally reserved for Congress. During hearings on November 5, several justices voiced skepticism about the legality of the President’s actions.
Chief Justice John Roberts questioned the basis for the President’s authority, stating that tariffs are “a form of taxation and that has always been the core power of Congress.” He added, “So, to have the president’s foreign affairs power trump that basic power for Congress seems to me to kind of neutralize between the two powers, the executive power and the legislative power.”
Economists are also weighing in on the potential consequences. Felix Tintelnot, a professor of economics at Duke university, explained that if the tariffs remain in place, “I would expect this leads to more price increases to come by those who have, for now, held back and not changed prices yet because they’re unsure about the perman
Why did this case come to the Supreme Court? the case originated from challenges brought by several U.S. companies and trade associations who argued that the tariffs imposed by President Trump, using the International Emergency Economic Powers Act (IEEPA), were unconstitutional because tariff-setting is a power reserved for Congress.They claimed the President exceeded his authority under IEEPA, which was intended for genuine national emergencies, not for broad economic policy changes.
Who is involved? The primary parties are the U.S. government, defending the President’s actions, and a coalition of American businesses and trade groups, including steel importers and agricultural exporters
