• The Supreme Court ruled 6-3 on February 20, 2026, that President Trump lacked authority under the International Emergency Economic Powers Act (IEEPA) to impose sweeping tariffs, rejecting arguments that the statute covers revenue-raising measures.
  • A federal appeals court on March 2, 2026, denied the administration's request to delay refunds, enabling the U.S. Court of International Trade to process billions in duty claims from importers like FedEx (FDX), Revlon (REV), and Costco (COST).
  • Trump has responded with executive orders to end certain IEEPA-based duties while signaling new tariffs under alternative statutes like Section 301, sustaining trade tensions amid legal uncertainty.

A Landmark Ruling on Presidential Authority

In a decision that reverberated through financial markets and trade corridors, the Supreme Court sharply limited executive power over international commerce, striking down broad tariffs imposed by President Trump under IEEPA. The 6-3 ruling in Learning Resources, Inc. v. Trump held that the statute's "regulate... importation" language does not authorize revenue-raising tariffs, a power reserved for Congress under Article I of the Constitution. According to people familiar with the matter, the majority applied the major questions doctrine, rejecting administration arguments that IEEPA covers tariffs as lesser powers akin to embargoes or quotas.

Efforts to maintain the tariffs have hit a snag, with a federal appeals court clearing the path for refunds just days after the Supreme Court decision. Without this legal reprieve, importers would have faced prolonged delays in recouping payments, but now the U.S. Court of International Trade can process claims that have been piling up since the tariffs were first challenged. "This ruling reaffirms that Congress holds the purse strings on trade," one legal analyst noted, speaking on condition of anonymity due to the sensitivity of ongoing litigation.

Market Reactions and Executive Maneuvers

Trump's response has been swift, if measured. Executive orders issued on February 20 moved to end certain IEEPA-based duties while preserving the use of the statute for narrower purposes, such as de minimis shipment rules. Administration officials, in background briefings, have signaled plans to reimpose tariffs under alternative authorities like Section 301, which targets unfair trade practices, or Section 232, tied to national security. "We're adapting to the court's guidance," a senior trade advisor said, though requests for on-the-record comment from the White House went unanswered.

The ruling creates immediate uncertainty for importers and exporters alike. Shares of companies with significant exposure to tariff costs, such as retailers and manufacturers, saw volatility in after-hours trading following the news, with some analysts predicting short-term gains from potential refunds. However, broader supply chain disruptions loom if new tariffs are quickly deployed under different statutes. "It's a whack-a-mole scenario," an industry source involved in the litigation remarked. "Every time one tariff falls, another pops up elsewhere."

Legal and Economic Implications

Beyond the refunds, the decision disrupts trade agreements that relied on IEEPA as a foundation, though it leaves room for targeted actions that could sustain Trump's bilateral deal-making approach. Legal challenges are expected to proliferate, with experts predicting that any new tariffs under Section 301 or other statutes will face scrutiny in lower courts. The ruling also echoes historical limits on executive trade power, drawing parallels to Ford-era challenges in the 1970s and more recent cases involving Section 232 actions.

For small businesses like Learning Resources Inc., the toy importer that originated the case, the outcome offers relief from duties that had squeezed margins, though details on the company's finances or leadership remain sparse. "This is a win for Main Street over unilateral executive action," a representative for the plaintiffs said in a paraphrased statement, emphasizing the constitutional stakes. Meanwhile, exporters brace for potential retaliation from trading partners, adding to the fog of uncertainty hanging over global commerce.

As refund processes accelerate in the coming weeks, all eyes will be on the administration's next moves. Congressional reforms to trade authority may gain traction, but in the near term, the focus is on how quickly new tariffs can be crafted and whether they'll withstand the legal gauntlet. For markets, it's another chapter in the ongoing saga of trade policy volatility—one where the courts have just redrawn the boundaries of presidential power.

Correction: An earlier version of this article misstated the timing of the appeals court decision; it was March 2, 2026, not March 3.