Trump Tariffs Ruled Unlawful by Supreme Court, But Trade Wars Continue

Washington D.C. – The U.S. Supreme Court’s decision on Friday striking down President Donald Trump’s broad use of emergency powers to impose tariffs has not ended the possibility of further trade conflicts, but rather shifted the landscape. While the ruling invalidated the tariffs imposed under the International Emergency Economic Powers Act (IEEPA), Trump has already signaled his intention to pursue alternative avenues for enacting his protectionist trade policies.

The court’s ruling specifically addressed tariffs levied on imports from countries including Canada, imposed under the justification of national security concerns related to fentanyl trafficking and trade deficits. These tariffs, which included a 35% rate on some Canadian goods and a 10% rate on energy and fertilizer products, have now been deemed unlawful. However, the decision does not affect existing tariffs imposed under Section 232 of the Trade Expansion Act of 1974, covering steel, aluminum, automobiles, and certain other goods. These tariffs remain in place and could be further utilized by the administration.

In a swift response to the ruling, Trump announced a new 10% global tariff, effective immediately, utilizing Section 122 of the Trade Act. This tariff is slated to last for 150 days, after which it would require congressional approval for extension. The White House clarified that goods compliant with the Canada-United States-Mexico Agreement (CUSMA) are exempt from this new tariff, a point repeatedly emphasized by Prime Minister Mark Carney as covering roughly 85% of Canadian exports to the U.S.

The legal challenge centered on Trump’s assertion that the IEPPA granted him the authority to impose tariffs as a response to declared emergencies. The Supreme Court majority rejected this interpretation, finding that the law does not authorize the President to unilaterally impose tariffs without congressional input, a power constitutionally reserved to the legislative branch. The dissenting justices – Clarence Thomas, Samuel Alito, and Brett Kavanaugh – disagreed with this assessment.

The immediate financial implications of the ruling are significant. The Penn-Wharton Budget Model estimates that the U.S. Government has collected $164.7 billion in revenue from the IEEPA tariffs since last January, representing 52% of all customs duties collected during that period. The question of whether these funds will be refunded to businesses that paid the tariffs remains unresolved, and is likely to be the subject of further legal challenges.

Matthew Holmes, executive vice-president at the Canadian Chamber of Commerce, cautioned that the Supreme Court decision does not represent a definitive end to trade tensions. “This really guarantees more uncertainty and likely more tariffs down the road, both globally speaking but possibly for Canada as well,” he stated. “It’s certainly not the end of this never-ending tariff story. It’s just a new chapter.”

Beyond the immediate impact of the new 10% tariff, Trump has indicated his intention to initiate investigations under Section 301 of the Trade Act, a statute previously used to target China over alleged unfair trade practices. This suggests a continued willingness to employ trade measures as a tool of economic coercion.

The ruling highlights the ongoing tension between presidential authority and congressional power in the realm of trade policy. While the Supreme Court has reasserted Congress’s constitutional role in regulating commerce, the Trump administration has demonstrated its determination to find alternative legal mechanisms to achieve its trade objectives.

Robert Glasgow, an international trade lawyer, noted the potential for protracted legal battles over refunds and the likelihood of further tariff actions. “It’s not the end of the war,” Glasgow said. “There’s still a lot of conflict left… and I think that they’re going to try to find every underhanded trick they can to try to impose more and greater tariffs.”

The situation leaves businesses on both sides of the border facing continued uncertainty. Groups like We Pay the Tariffs are already mobilizing to seek refunds for previously paid tariffs, but the process is expected to be complex and potentially lengthy. The long-term implications of the Supreme Court’s decision, and the Trump administration’s response, will continue to unfold in the coming months, shaping the future of international trade relations.