Supreme Court Deals Blow to Trump’s Tariffs: Key Questions & Answers

Washington D.C. – The Supreme Court of the United States delivered a significant blow to President Donald Trump’s economic agenda on Friday, February 20, 2026, ruling that much of his signature tariff policy is unconstitutional. The 6-3 decision found that the president lacks the authority to unilaterally impose sweeping tariffs under the International Emergency Economic Powers Act (IEEPA) without explicit congressional authorization.

The ruling centers on tariffs imposed on nearly every country, initially justified under IEEPA as a response to various national security and economic concerns. These included “reciprocal” tariffs mirroring trade barriers imposed by other nations, ranging from 34% on China to a baseline of 10% for most other countries, as well as a 25% tariff on goods from Canada, China, and Mexico related to the flow of fentanyl into the U.S. The court determined that IEEPA, enacted in 1977, does not grant the president the power to levy tariffs, as the law makes no reference to such duties.

Chief Justice John Roberts, writing for the majority, stated, “IEEPA contains no reference to tariffs or duties. The Government points to no statute in which Congress used the word ‘regulate’ to authorize taxation. And until now no President has read IEEPA to confer such power.” The decision underscores the constitutional principle of separation of powers, reaffirming Congress’s authority over trade policy.

The ruling is particularly notable as it marked the first time the Supreme Court evaluated the legal merits of a major policy initiative from Trump’s second term. While the court had previously allowed the enforcement of some of his policies during legal challenges, this decision represents his most significant legal defeat to date. President Trump responded to the ruling with strong criticism, stating he was “ashamed” of certain members of the court and expressing disappointment with the decision.

Impact on Global Trade and the Swiss Economy

The immediate impact of the ruling is the likely reversal of the tariffs deemed illegal, returning U.S. Trade schedules to their state prior to April 2, 2025, the date Trump initiated the broad tariff measures. For Switzerland, this initially means the removal of the general 15% tariff on goods exported to the United States. However, this relief is tempered by President Trump’s subsequent announcement of a new 10% global tariff, to be implemented under Section 122 of the Trade Expansion Act of 1962.

Sector-specific tariffs, such as those on steel and aluminum, are expected to remain in place. Swiss officials indicate that ongoing negotiations for a comprehensive trade agreement with the U.S. Will continue, viewing such an agreement as the best means of mitigating future trade risks under a potentially unpredictable policy environment. In 2025, Swiss exports to the U.S. Totaled over $2 billion, with October representing the peak month at $364 million.

The Legal Basis for the Tariffs and Alternative Avenues

The Trump administration’s reliance on IEEPA was questioned throughout the legal proceedings. The law grants the president broad powers to address national emergencies, but its application to tariffs was seen as a stretch by many legal experts and, by the majority of the Supreme Court. The court’s skepticism was evident during oral arguments, with justices questioning the extent of presidential authority in the absence of specific congressional authorization.

With IEEPA now deemed an insufficient legal basis for broad tariffs, the administration has several alternative avenues. Section 232 of the Trade Expansion Act of 1962, which allows tariffs based on national security concerns, remains an option. However, this requires an investigation by the Commerce Department and a finding that imports threaten national security. Section 301 of the same act, used previously against China, allows tariffs in response to unfair trade practices, but also requires a formal investigation process.

President Trump has already indicated his intention to utilize Section 122, imposing the 10% global tariff. However, this provision is intended as a short-term measure to address balance of payments issues, with a maximum duration of 150 days and a cap of 15%. Seeking explicit congressional authorization for tariffs remains a possibility, but given the current political climate and narrow Republican majorities in Congress, it is a path Trump appears reluctant to pursue.

Economic Consequences and Future Outlook

The tariffs imposed by the Trump administration generated approximately $264 billion in revenue for the U.S. Government in the last year, representing nearly a third of its military spending. However, a significant portion of this revenue was ultimately borne by American consumers in the form of higher prices, with the Tax Foundation estimating an average increase of $1100 per household in 2025, rising to $1500 in the current year.

Globally, the tariffs have not significantly reduced the U.S. Trade deficit. While exports from China and Germany decreased, trade has shifted towards other regions, particularly Asia. The dollar has also weakened, losing approximately 8% of its value in trade-weighted terms over the past year. The Supreme Court’s decision, coupled with the new 10% tariff, introduces further uncertainty into the global trade landscape and underscores the ongoing tension between protectionist policies and the principles of free trade.

The long-term implications of the ruling remain to be seen, but President Trump’s ability to unilaterally impose tariffs has been significantly curtailed. The future of U.S. Trade policy will likely depend on the administration’s willingness to work with Congress and engage in multilateral negotiations, rather than relying on executive action.