Supreme Court Struck Down Trump’s Tariffs. Here’s Why the Next Ones May Survive.

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On February 20, 2026, the Supreme Court handed President Trump a 6-to-3 loss that invalidated the sweeping tariffs he had imposed on nearly every country on earth. On the same day as the ruling, the administration had already signed a new proclamation invoking a different law entirely. The pivot was so fast it suggested the fallback had been sitting in a drawer, ready to go.

That speed tells you something: this was not improvisation but a layered legal strategy. Why the replacement tariff might survive depends on exactly what the Court struck down, and why the new authority is built differently.

What the Court Said

The decision in Learning Resources, Inc. V. Trump was clear in its core holding: the International Emergency Economic Powers Act does not authorize the president to impose tariffs. IEEPA, enacted in 1977, includes the word “regulate” regarding imports, though the Supreme Court ruled in February 2026 that this does not authorize tariffs. The Court said that word, “regulate,” does not mean “tax.” Tariffs are a form of taxation. The Constitution gives that power to Congress. The two things are not the same, and fifty years of presidents never using IEEPA for tariffs was itself proof that Congress never meant it to cover them.

Congress wrote IEEPA to limit presidents, not to hand them a blank check for trade policy.

But the Court was divided on the reasoning, and that split matters greatly for what comes next. Chief Justice John Roberts, joined by Justices Neil Gorsuch and Amy Coney Barrett, invoked the “major questions doctrine.” This is a principle the Court has refined in recent years. It requires that Congress speak with unmistakable clarity before delegating power of significant economic and political consequences to the executive. The Roberts plurality argued that a claimed authority to impose tariffs of unlimited amount, unlimited duration, and unlimited scope on any country for any emergency violated this doctrine. Congress had not clearly authorized anything that sweeping.

Justices Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson agreed the tariffs were illegal but rejected the major questions framework as unnecessary. Justice Kagan’s concurrence argued that ordinary statutory interpretation was enough: “regulate” simply does not mean “tax.” Congress’s consistent practice of speaking explicitly when it delegates tariff authority was itself enough to resolve the question. No special constitutional doctrine required.

The three dissenters, Justices Brett Kavanaugh, Clarence Thomas, and Samuel Alito, argued that “regulate importation” had historically included tariffs. Kavanaugh’s 63-page dissent, joined by Thomas and Alito, argued on textual, historical, and precedential grounds that IEEPA’s language plainly covers tariffs — and included a notable aside. The doctrine might not greatly limit presidential tariff authority going forward, because Congress had provided other, more explicitly permissive statutes for exactly this purpose.

He was, as it turned out, describing what the administration did the next day.

Section 122: The Statute Nobody Had Heard Of

Section 122 of the Trade Act of 1974 was Congress’s response to President Nixon’s 1971 surprise: a 10 percent tariff on all imports, imposed overnight using emergency authority from an earlier statute. Congress looked at that episode and decided to write a law that would allow temporary import surcharges but with clear, mathematical limits built in.

Although floating exchange rates had technically begun by 1973, before the Trade Act was enacted, the statute’s language reflected the fixed-rate Bretton Woods model.

The statute’s text is notable for its specificity. The president may impose a temporary import surcharge “not to exceed 15 percent of the import’s value” for “a period not exceeding 150 days (unless such period is extended by Act of Congress).” Not “as needed.” Not “when deemed appropriate.” Fifteen percent, maximum. One hundred fifty days, maximum. Extension only by Congress, not by executive order.

The Trump administration signed its Section 122 proclamation on February 20, the same day the Court ruled, setting the tariff initially at 10 percent. It then announced within twenty-four hours that it would increase to the statutory maximum of 15 percent. The tariff took effect February 24 and is set to expire July 24, 2026. That 150-day window is not incidental. It is the entire structure of the authority.

The triggering condition is also different from IEEPA’s. Section 122 requires “fundamental international payments problems,” specifically large balance-of-payments deficits, imminent dollar depreciation, or the need to work with other countries to correct international payment imbalances. The administration’s proclamation cites the U.S. Current account deficit as evidence that such problems exist. That deficit is a broad measure of what the U.S. Spends abroad versus what it earns, including goods, services, and investment income. It reached $1.13 trillion in 2024, according to the U.S. Bureau of Economic Analysis.

Why Section 122’s Triggering Condition Is Contested

Section 122 was written in 1974, when the United States had abandoned the Bretton Woods system. That was a post-World War II agreement that pegged currencies to the dollar and the dollar to gold, maintaining fixed exchange rates. Under fixed rates, a persistent trade deficit was a real crisis: it drained the government’s stockpile of foreign currency used to defend the exchange rate and eventually forced a currency devaluation. The statute’s “balance-of-payments deficit” language was designed for that world.

We do not live in that world. The United States has operated under floating exchange rates since 1973. Under a floating system, trade deficits are self-correcting by design: a deficit means more dollars flow out than in, which weakens the dollar. A weaker dollar means foreign buyers get more for their money. This makes U.S. Goods cheaper abroad and imports more expensive at home, which gradually restores balance. The “balance of payments,” properly calculated, offsets the trade deficit with money flowing in from foreign investors, and that number is approximately zero. Foreign investors pour billions into U.S. Financial markets, real estate, and corporations. That inflow makes up for the gap in goods trade.

Peter Berezin of BCA Research and Alan Reynolds of the Cato Institute both noted immediately after the ruling that the U.S. Does not face a balance-of-payments deficit in the technical sense the statute contemplates. Bryan Riley, director of the National Taxpayers Union’s Free Trade Initiative, was direct: Section 122 was “effectively rendered obsolete” when the U.S. Abandoned fixed exchange rates more than fifty years ago.

The administration’s proclamation tries to get ahead of this challenge by asserting that “fundamental international payments problems within the meaning of section 122 exist.” The proclamation directly asserts the U.S. faces “a large and serious balance-of-payments deficit.” That is a litigation position. It invites a court to ask: does the statute’s triggering condition exist, or has the administration redefined “balance of payments” to avoid the self-correcting mechanism that makes the concept obsolete?

And here is where the statute’s exact wording becomes important. Section 122 does not say “if the President determines that payments problems exist.” It says “when fundamental international payments problems require special import measures.” The word “when” suggests a condition that either exists or does not. It is not purely a matter of executive discretion. A court reviewing this tariff could, in theory, find that the triggering condition is not met by the facts. It could reach that conclusion without ever reaching the constitutional question of presidential power.

Does Section 122’s Explicit Authorization Satisfy the Major Questions Doctrine?

Assume for a moment that a court does not dismiss the tariff on the merits. That could happen either because it finds the payments problem exists or because it concludes such decisions are left to executive discretion. The next question is constitutional. Does Section 122’s explicit congressional authorization, with its 15 percent cap and 150-day limit, satisfy the major questions doctrine that the Roberts plurality applied to IEEPA? WilmerHale’s post-ruling analysis outlines the key legal questions facing the replacement authority.

The strongest case for Section 122’s durability is a plain reading of the Court’s own reasoning. The Roberts plurality argued that IEEPA failed to meet the standard of clear congressional authorization with careful constraints. Section 122 is the clearest example. Congress wrote the cap. Congress wrote the duration. Congress required specific findings about economic conditions. Where IEEPA loosely authorized “regulating importation” with no mention of tariffs, Section 122 is tariff legislation, full stop. If the major questions doctrine requires clear congressional authorization, Section 122 provides exactly that by any reasonable reading.

Critics will push back on this. They will argue that the major questions doctrine does not go away simply because Congress wrote a statute with caps and durations. The doctrine requires clear authorization for the exercise of power itself, not just explicit limitations on how much or how long. Section 122, they will contend, authorizes a tariff only if fundamental payments problems exist. If those conditions are not met in the economic sense, the statute is not being used within its scope. The president would then have exceeded delegated authority, regardless of how clearly Congress wrote the caps.

This debate will likely turn on how closely courts are willing to check the statutory triggering conditions. At one extreme: the statute requires findings about payments problems, the president made those findings, and executive decisions about international payments are left entirely to the president’s judgment, beyond court review. At the other extreme: the statute’s conditions are not satisfied by modern economic facts, and courts will not allow a 1974 statute to be reused to reach policy goals its drafters never intended. Most likely, the answer lands somewhere between those poles. That means litigation and uncertainty for months.

The 150-Day Clock and What Comes After

Even if Section 122 survives legal challenge, the tariff has a fixed expiration date. July 24, 2026. What happens then is the real policy question.

Congress could extend the authority by legislation, but that seems unlikely. Republican and Democratic members alike have shown skepticism of the tariff regime. Building a majority to extend presidential authority in an election year, with midterms scheduled for November 2026, would be difficult. An executive extension would conflict with the statute’s plain language: the period “shall” be 150 days “unless extended by Act of Congress.” Attempting to extend it by proclamation would itself face immediate legal challenge.

The administration has already signaled its actual plan. U.S. Trade Representative Jamieson Greer announced that Section 301 investigations, which allow tariffs in response to unfair trade practices, are being launched on an accelerated timeline. Section 301 has no rate cap and no expiration date. Once tariffs are imposed under it, they are lasting and difficult to reverse. The administration is using the temporary Section 122 authority to keep tariffs in place while Section 301 investigations conclude. It will then move to the longer-term regime under that statute.

Section 232 tariffs, imposing duties on national security grounds, are already in place and were not affected by the IEEPA ruling. Existing Section 232 tariffs on steel, aluminum, and automobiles remain in force. The administration could expand these investigations, but Section 232 tariffs are industry-specific, not across-the-board. They cannot replace a 15 percent across-the-board tariff.

The most likely setup after July 24: the uniform 15 percent drops away, replaced by a mix of Section 232 tariffs on specific industries and Section 301 tariffs on specific countries and products. Countries that negotiate successfully under Section 301 frameworks could receive better treatment. Countries that do not could face both sector-specific Section 232 duties and product-specific Section 301 tariffs. The result would be less uniform and less flexible than IEEPA permitted. Even so, it would cover substantial ground.

For importers and manufacturers, this creates a planning problem that is truly costly regardless of the legal outcome. The 15 percent tariff is temporary by design. Contracts, supply chains, and pricing strategies must account for the possibility that the tariff field shifts again in July. That uncertainty is itself a cost to business decisions, even before a single dollar of tariff is collected.

How the Authorities Compare

The Supreme Court’s decision raised an immediate question: if IEEPA is unconstitutional for tariffs, what does that say about the other statutes presidents have used?

Source: U.S. House Office of the Law Revision Counsel

Section 232 and Section 301 are uncapped and durable

, but they require investigation and specific findings before tariffs are imposed. The Court’s IEEPA ruling did not call either statute’s constitutionality into question. Section 232 explicitly mentions tariffs and specifies a Commerce Department investigation process; Section 301 requires USTR investigation and specific findings about unfair practices. Both have survived prior court challenges on the grounds that they contain an “intelligible principle” (a legal standard requiring that Congress give the executive branch at least some clear guideline to follow, courts have used this to uphold broad delegations of power) guiding executive action, even if that principle is somewhat broad.

Section 232 and Section 301 were always the more legally solid tools. IEEPA was faster and more flexible, which is why the administration preferred it. Now that it is gone, the administration is left with authorities that require more process and produce less uniform results.

Trump’s Public Attacks on the Ruling and Their Legal Consequences

On the morning after the ruling — though the proclamation itself had been signed the previous evening — Trump posted on Truth Social that the decision was “ridiculous, poorly written, and extraordinarily anti-American.” He singled out Justices Gorsuch and Barrett, both his appointees, for special criticism. He called the situation “an embarrassment to their families.” Politico’s coverage of the administration’s reaction details the political fallout from the ruling.

This matters legally, not just politically. When an administration argues its new tariff in court, it will need to convince judges that it is respecting the Court’s constitutional reasoning, not looking for workarounds. Trump’s public statements make that case harder. They signal that the president views the Court’s decision not as a valid exercise of constitutional authority but as an obstacle to be gotten around. Judges who already worry about unchecked executive power will notice.

There is also the question of what the administration does with the approximately $133.5 billion to $142 billion in tariff duties already collected from importers under the now-invalidated IEEPA tariffs. The Court’s decision left this question unresolved. The administration has signaled it intends to fight hard in court rather than issue refunds. Importers have a 180-day window to file formal refund claims, though additional procedural requirements apply and actual payment of refunds remains uncertain. The refund litigation could stretch for years. The amounts involved are large enough to matter to businesses that paid tariffs on goods they have already sold.

Whether Courts Will Defer on Section 122’s Triggering Condition

Here is the tension that nobody has cleanly answered yet: Section 122’s triggering condition may be economically obsolete, but the statute itself is clearly valid law. Congress wrote it. It is still on the books. The question is whether a court will read “fundamental international payments problems” as a real condition that must exist in the modern economic sense, or as a threshold finding that the president gets to make with minimal judicial review.

If courts defer to the administration’s definition of “balance-of-payments deficit,” Section 122 survives and the administration gets its five months of use. If courts apply the economic concept as economists define it, the statute’s triggering condition is not met, and the tariff fails on the merits without ever reaching the constitutional question.

The administration is betting on deference. It has packed its proclamation with economic analysis designed to give courts a reason to defer. Whether that bet pays off will depend on which judges hear the challenges. It will also depend on how skeptical they are of an administration that, by its own president’s public statements, views judicial review as an obstacle rather than a constraint.

July 24 is the real deadline. Not for the tariff, but for the administration’s ability to claim it has a clear long-term trade strategy rather than a series of legal improvisations. By that date, Section 301 investigations need to be far enough along to produce lasting tariffs. Section 232 expansions need to be in place. The patchwork needs to look like a policy, not a scramble. Whether it does will tell us a great deal about whether the administration’s legal framework was as carefully planned as the speed of its February 20 pivot suggested.

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