Delivering a crucial blow to the administration’s signature economic agenda, the U.S. Supreme Court ruled 6-3 on Friday that President Donald Trump’s sweeping global tariffs are unconstitutional.
The decision effectively dismantles the reciprocal tariff framework and curtails the use of emergency powers to bypass Congressional authority over trade.
Chief Justice John Roberts, writing for the majority, emphasized that the power to tax, including the imposition of tariffs, resides exclusively with the legislative branch.
“The President asserts the extraordinary power to unilaterally impose tariffs of unlimited amount, duration, and scope. In light of the breadth, history, and constitutional context of that asserted authority, he must identify clear congressional authorization to exercise it,” Roberts wrote, declaring that the 1977 law Trump cited to justify the import duties “falls short” of the Congressional approval that would be needed.
Upon learning of the decision, Trump reportedly told a group of governors that it was “disgraceful what the court has done,” according to a MS Now report. In a press briefing later, he accused the court’s decision of being influenced by foreign interests, and vowed to impose a global 10% tariff under a 52-year-old law. On Saturday, he raised tariffs to 15%.
The legal battle centered on Trump’s use of the International Emergency Economic Powers Act (IEEPA) of 1977. While previous presidents used the act to levy sanctions, the Trump administration was the first to invoke it to impose broad import taxes, citing national emergencies related to trade deficits and drug trafficking.
At the height of the policy, the administration imposed a baseline 10% tariff on most global imports, targeted duties on allies like Canada and Mexico ranging from 25% to 35%, and imposed aggressive levies on China, reaching as high as 145%.
The court’s conservative wing was split. Justices Clarence Thomas, Samuel Alito, and Brett Kavanaugh dissented, arguing that the tariffs were lawful under existing text and precedent. Justice Kavanaugh noted that while the policy’s wisdom could be debated, the executive’s actions fell within the scope of historical presidential authority.
“With $133.5 billion in tariff revenue up for grabs if the U.S. tariff ruling leads to refunds for organizations, we believe this would act as a net positive for tech with financial relief for many companies while creating greater supply chain visibility especially coming from the Asia supply chain,” Wedbush Securities analyst Dan Ives said in a note to investors on Friday. “This will be a very noisy situation, but for the tech space and AI trade it’s a net positive out of the gates in our view.”
Treasury Secretary Scott Bessent all but ruled out refunds to consumers, many of whom paid hundreds of dollars in additional fees to purchase goods overseas.
Mitch Ashley, vice president and practice lead, Software Lifecycle Engineering, at the Futurum Group, said the ruling removes a cost variable that had started reshaping enterprise decisions on offshore development partnerships and infrastructure sourcing. Software supply chains were beginning to factor tariff exposure into build-vs.-buy analysis on hardware and cloud components, and that calculus was supposed to reset, he said.
“The President’s statement that tariffs remain in place through other statutes puts that clarity in question before markets could act on it. Are they on or off? That ambiguity is its own supply chain risk,” Ashley said. “Teams that deferred vendor consolidation decisions pending tariff resolution are still waiting, and security and provenance-driven supply chain decisions cannot advance when the cost and compliance environment is unresolved.”
Cleo CEO Mahesh Rajasekharan added the decision will “reshape the future of global trade policy. Businesses were already contending with increased policy-driven volatility layered on top of an already challenging landscape marked by climate disruption, demand shifts, and geopolitical friction. Sudden trade interventions, like the emergency tariffs at the heart of this case, create downstream impacts on sourcing strategies, inventory positioning, transportation planning, and cash flow, often with little to no time to adjust strategies.”
“Trade flows will adjust. Some lanes may see volume come back faster than expected, while others could lag,” said Nishith Rastogi, founder and CEO of Locus. “Capacity won’t rebalance perfectly on day one. There’s usually a period where parts of the network feel tight and others feel underutilized.”
Indeed, the ruling leaves the federal government facing a logistical nightmare. Since the tariffs began, the Treasury has collected more than $133 billion in duties. While the Court struck down the taxes, it remained silent on whether those billions must be returned to businesses.
Major retailers, including Costco Wholesale Corp., have initiated litigation in lower courts to seek refunds. During oral arguments, the process of returning the funds was described as a potential “mess,” a sentiment echoed in the dissenting opinion.
“The refund fight is going to be a grind, not a victory lap. Legally, the Court told us these IEEPA tariffs were beyond the President’s authority, but it refused to spell out how – or even whether – hundreds of billions already collected get back to importers, much less how companies and individual consumers recover what they paid in increased prices,” said Jerry Levine, general counsel and chief evangelist at Leah. “That leaves the real work to the Court of International Trade and lower courts, where companies will almost certainly need to litigate claim‑by‑claim, rather than see some magical automatic repayment regime appear overnight.”
Despite the ruling, the trade war may not be over. The White House has signaled it intends to pivot to other legal authorities to keep the tariff framework intact, though these alternative paths are often slower and more restricted. The White House may proceed to explore other avenues to expand tariffs, such as invoking authorities granted under Sections 301 and 122 of the Trade Act of 1974, or possibly Section 232 of the Trade Expansion Act of 1962, according to the Information Technology and Innovation Foundation (ITIF).
“The Supreme Court ruled on the process, not the policy,” said Edmund Zagorin, co-founder of Arkestro, maker of predictive procurement technology used by Chevron Corp., Merck & Co. Inc., and others. “Tariffs aren’t going away; they’re just being moved to different legal foundations. Supply chain leaders who treated SCOTUS as a ‘reset button’ are now finding themselves in a more volatile environment than before.”
The decision marks a rare instance of the high court saying no to Trump after a series of wins for the administration on the emergency docket. For American businesses and global trading partners — including the EU, Japan, and South Korea — the ruling provides a moment of relief, though the Congressional Budget Office warned that the long-term economic impact of the tariff era could still reach $3 trillion over the next decade.
“The undoing of tariffs means that the penalty phase of trying to bring back tech manufacturing, and specifically chip making, will be going away (unless the administration finds some other means to do this),” tech analyst Jack Gold said. “This changes the long-term investment outlook for many companies, as they can continue to make their chips at the most productive and cost-effective facilities wherever they are located, without having to invest billions in new factories to please the administration.”
The ruling underscores that in today’s world of geopolitical chess, tariffs can change overnight — making anti-fragility and rapid scenario planning non-negotiable, according to Tim Beckhoff, a supply chain risk and supplier collaboration expert at o9 Solutions. “AI-powered systems can keep pace with this volatility, helping businesses pivot instantly and turn uncertainty into a competitive advantage. The winners will be those who can adapt supply chains at the speed of policy,” he said.
Added Tanguy Caillet, who leads Genpact’s supply chain consulting practice: “The Supreme Court’s tariff ruling won’t send suppliers scrambling because COVID already forced them to years ago. Their tech stacks and shipping routes are now much more nimble and agile, and I don’t expect them to change while the policy landscape is still so uncertain.”
Ultimately, the real story is what happens when trade policy meets the age of AI, notes David Brudenell, co-CEO global agentic AI firm Decidr.
“We are moving into a world where intelligence is now productized – AI tokens, priced and metered by companies like OpenAI and Anthropic, are becoming the currency of the global knowledge economy,” Brudenell said. “This raises a new dimension of sovereignty — not just national sovereignty, but corporate knowledge sovereignty. The companies that control frontier AI models increasingly sit at the center of geopolitical leverage. As [Microsoft Corp. CEO] Satya Nadella recently noted at Davos, the next phase of globalization will be shaped by how nations and enterprises govern and deploy AI infrastructure.
“Traditional tariffs reshape supply chains. Tariffs on AI tokens would reshape the sovereignty of the knowledge economy,” he added.
