The Tariff Whiplash

What the Court Actually Said — and What It Didn't

The Supreme Court's decision in Learning Resources, Inc. v. Trump, decided February 20, 2026, was not close on the core question. Chief Justice Roberts, writing for a 6–3 majority, held that the International Emergency Economic Powers Act does not authorize the President to impose tariffs. The reasoning was precise: IEEPA empowers the President to "regulate importation," but "regulate" in ordinary legal usage means to control or govern — not to tax. Congress, when it has historically delegated tariff authority to the executive, has always used explicit language: "duties," "surcharges," "tariffs." IEEPA contains none of those words. Roberts wrote that two words — "regulate" and "importation," separated by 16 others — "cannot bear such weight."

The majority also invoked the "major questions" doctrine — the same principle used to strike down Biden's student loan forgiveness program — holding that Congress cannot delegate sweeping economic authority through ambiguous statutory language. Taxing power is constitutionally assigned to Congress. A president cannot acquire it by implication.

Three things the ruling did not do matter as much as what it did. It did not address refunds — importers who paid IEEPA tariffs will need to pursue administrative remedies through the US Court of International Trade, a process that will take months or years and is not automatic. It did not rule on whether Section 122 is a valid replacement authority — that question is now, effectively, the next litigation frontier. And it did not address the theoretical scenario where a president allows a 150-day tariff to expire, declares a fresh emergency, and restarts the clock — potentially creating de facto permanent tariffs from a statute designed as a short-term emergency tool.

Section 122: The Backup That Was Already Ready

Trump administration trade officials had been signalling their Plan B for months. Section 122 of the Trade Act of 1974 — which had never been invoked by any president in its 51-year existence — authorises the president to impose import surcharges of up to 15% to address "large and serious" balance-of-payments deficits, without requiring the interagency investigations that other trade statutes demand. The administration's proclamation, issued the same day as the ruling, cited the US goods trade deficit of $1.2 trillion, a first-ever negative balance on primary income, and a net international investment position of negative 90% of GDP as the triggering condition.

The Statute Nobody Had Ever Used

Section 122 is a 51-year-old provision that sat dormant through every major economic crisis of the past half century — the Latin American debt crisis, the 1997 Asian financial contagion, the 2008 global banking collapse. None of those events triggered its use. That dormancy was, until last Friday, a reasonable signal that the constraints Congress attached to it were real constraints: a 15% rate ceiling, a 150-day duration limit, a requirement that it apply uniformly across countries (with a narrow exception for countries running large surpluses), and a triggering condition of "fundamental international payments problems."

The administration's use of Section 122 is unprecedented, and legal experts have flagged two specific vulnerabilities that are likely to produce the next round of litigation.

The EU has responded to this ambiguity by extending its suspension of retaliatory tariffs through August 2026 — explicitly buying time to see whether Section 122 survives its 150-day window before escalating. That is a rational bet on the July 24 cliff. Canada is differently positioned: USMCA-qualifying Canadian goods are explicitly exempt from the Section 122 surcharge, the same carveout that existed under IEEPA. The IEEPA-specific Canada tariffs — the fentanyl and immigration-related ones — are gone with the ruling. What remains are the pre-existing sectoral tariffs (steel, aluminum, autos under Section 232) and the USMCA framework.

It Isn't a Tariff Rate. It's a Framework.

The Monday selloff was only partially about the tariffs themselves. The Dow's 821-point drop was compounded by the AI disruption fears that sent IBM down 13% and cybersecurity stocks into freefall — those recovered Tuesday as Anthropic's event proved less disruptive than feared. But the tariff-driven component of the selloff is revealing a shift in how markets are modelling trade risk.

For most of 2025, markets were pricing specific tariff rates — adjusting supply chain assumptions, import cost models, and sector exposures based on what the IEEPA schedules said. That is a tractable modelling problem. What the IEEPA-to-Section-122 pivot in under twelve hours demonstrated is that the specific rate is not the stable input. The stable input is: a president who will use whatever statutory authority is available to maintain some level of tariff pressure, with the rate and legal basis variable, the duration uncertain, and the transition path between legal theories extremely fast.

That is a different kind of risk to price. It is not "what is the tariff on this product category?" It is "what is the cost of not knowing what the tariff will be in 90 days?" The VIX at 21 and gold at $5,168 are consistent with that uncertainty premium being meaningfully elevated — not panicked, but durably above the complacent baseline of late 2025.

What This Means Specifically for Canada

The IEEPA ruling has direct implications for Canada that differ from the general global picture, because the specific tariffs Canada faced under IEEPA were different from the baseline tariffs facing most countries.

For the Carney government's trade diversification rationale — the same rationale that underpinned the Beijing visit in January — the IEEPA ruling actually strengthens the strategic case rather than weakening it. The ruling confirms that US trade policy will remain volatile and legally contested regardless of which statutory vehicle is currently in use. The uncertainty that drove the diversification logic has not been resolved. It has been legally formalised.

Three Dates That Matter

The tariff picture between now and year-end has three decision points that will determine whether the current uncertainty premium in markets rises, falls, or settles into a new floor.

July 24, 2026 — Section 122 expiration. If Section 122 tariffs expire as scheduled and Congress does not extend them, the effective US tariff rate falls from approximately 13.7% back to 9.1% — still the highest since 1947, but meaningfully lower. Markets would likely treat expiration as a partial relief signal. If the administration restarts the clock through a new emergency declaration, the legal battle over whether that is permissible begins immediately. If Congress votes to extend, tariffs become durably legislated rather than presidentially imposed — a different legal risk profile but continued rate pressure.

Section 301 investigation outcomes. USTR has announced new Section 301 investigations into most major trading partners. Section 301 requires a formal investigative process — typically six to twelve months — before tariffs can be imposed. These investigations, if pursued to completion, would produce tariffs with stronger legal footing than IEEPA ever had: Congress explicitly authorised Section 301 for trade retaliation, the authority is well-established, and judicial review is narrower. The administration appears to be using the 150-day Section 122 window to build the Section 301 case. Watch for preliminary findings in the August–September timeframe.

The refund litigation. An estimated $142–160 billion in IEEPA tariffs was collected in 2025. The Supreme Court did not resolve whether importers are entitled to refunds or how that process would work. The US Court of International Trade will now face a wave of refund claims. The outcome has significant fiscal implications — the Yale Budget Lab estimated that IEEPA tariffs would have raised $1.4 trillion over 2026–35. Much of that revenue projection disappears with the ruling, and a substantial portion of what was already collected may need to be returned. The fiscal knock-on — reduced government revenue, more deficit pressure — is a secondary market factor that hasn't received much attention yet.