---
title: Supreme Court Tariff Ruling Unravels the Turnberry Deal
description: A 6-3 Supreme Court ruling against IEEPA tariffs leaves the Turnberry deal standing on ground that no longer exists. The EU Parliament’s exit clauses now look prescient.
author: Darie Nani (Editor-in-Chief)
date: 2026-02-20T22:02:18.000Z
updated: 2026-03-26T14:37:24.385Z
canonical: https://www.sovereignmagazine.com/article/supreme-court-tariff-ruling-unravels-the-turnberry-deal
image: https://cdn.nanimediahouse.com/supreme-court-ieepa-tariffs-turnberry.webp
categories: Politics
content_type: News
region: United States
publication: Sovereign Magazine
---

The US Supreme Court ruled 6-3 on 20 February 2026 that the International Emergency Economic Powers Act does not authorise the president to impose tariffs. The decision in *Learning Resources, Inc. v. Trump* struck down both the reciprocal tariffs (a 10 per cent baseline, rising to 34 per cent on China) and the fentanyl-related duties on Canada, China and Mexico. Chief Justice John Roberts, writing for the majority alongside Justices Gorsuch, Barrett, Sotomayor, Kagan and Jackson, held that IEEPA ‘contains no reference to tariffs or duties’ and that no president had previously read the statute to confer such power. Approximately $175 billion in tariffs collected under IEEPA are now legally void.

## The Turnberry deal was built on IEEPA tariffs

The Turnberry trade agreement signed by Trump and Ursula von der Leyen in July 2025 was a direct response to the IEEPA tariffs. European manufacturers were facing duties of 25 to 50 per cent. The deal the EU accepted (zero tariffs on US goods entering Europe, 15 per cent on EU exports to the US) only made sense because the alternative was worse. The Supreme Court just removed that alternative. The threat that justified the EU’s concessions no longer has a legal basis.

As Sovereign [reported last week](https://www.sovereignmagazine.com/article/the-eu-gave-trump-his-trade-deal-then-rewrote-the-fine-print), the [European Parliament had already rewritten the Turnberry terms](https://www.sovereignmagazine.com/article/eu-lawmakers-digital-markets-act-enforcement-us-pressure) before ratification, adding a sunset clause (expiring March 2028), automatic steel snapbacks and a standstill trigger if US tariffs exceed 15 per cent. Those mechanisms were designed as insurance. The court ruling makes them the main text.

## Trump’s replacement tool is weaker

Within hours of the ruling, Trump called the justices ‘a disgrace’ and signed an order imposing a 10 per cent global tariff under Section 122 of the Trade Act of 1974. Section 122 caps tariffs at 15 per cent and limits their duration to 150 days. The administration also announced it would invoke Section 232 (national security) and Section 301 (unfair trade practices) as longer-term alternatives, though both require separate legal processes and face their own judicial exposure.

The Turnberry standstill clause suspends the deal if US tariffs exceed 15 per cent. Section 122 stays at or below that ceiling. But it expires in July 2026, nine months before the Turnberry sunset. The EU does not need to renegotiate. Its existing exit ramps outlast every tool Trump has left.

## Brussels is already recalculating

The European Commission stated it is ‘analysing the ruling carefully’ and seeking clarity from the White House on next steps. Bernd Lange, chair of the European Parliament’s International Trade Committee, convened an extraordinary session to assess the implications. The committee’s ratification vote (scheduled for 24 February) now carries different weight. MEPs are no longer voting on a deal shaped by IEEPA tariffs. They are voting on a deal whose underlying threat the Supreme Court has declared illegal.

The EU negotiated the headline terms Trump wanted. Parliament embedded the exit conditions it needed. The Supreme Court has now confirmed that the original pressure was never legally sound. The Turnberry deal still exists, but the IEEPA tariffs that gave it purpose do not.

## Further Context

**Q: Does the president have the power to implement tariffs?**
The US Constitution assigns tariff authority to Congress under Article I, Section 8. Over the past century, Congress has delegated limited tariff powers to the president through specific statutes. Section 201 of the Trade Act of 1974 allows tariffs when a surge in imports threatens a domestic industry. Section 232 permits tariffs on national security grounds. Section 301 addresses unfair trade practices. Each statute comes with procedural requirements, investigation periods and judicial review. The Supreme Court’s IEEPA ruling reinforced that these delegations must be explicit. A general emergency powers statute does not substitute for direct congressional authorisation of tariff powers.

**Q: Do US tariffs need congressional approval?**
Tariff rates are set by Congress through legislation, but presidents can adjust them within the bounds of specific trade statutes. Congress does not vote on each individual tariff change. Instead, it grants the executive branch authority to act within defined limits. Section 122, which Trump invoked immediately after the ruling, caps presidential tariffs at 15 per cent for a maximum of 150 days. The IEEPA ruling established that the president cannot use broadly worded emergency legislation to bypass these limits. The distinction matters because Section 122 and Section 232 have survived judicial review where IEEPA has not, precisely because Congress wrote tariff authority into those statutes directly.