• Trump defies Supreme Court decision striking down tariffs on Canada and Mexico, signaling intent to sustain or reimpose them.
  • The ruling vacates tariffs imposed under IEEPA, potentially refunding $142 billion collected in 2025 and disrupting North American supply chains.
  • Ongoing trade war strains USMCA, with retaliatory measures and heightened economic uncertainty as stakeholders pursue refunds and legal challenges.

In a bold move that defies judicial authority, former President Donald Trump announced on February 20, 2026, that "fentanyl tariffs" on imports from Canada and Mexico would remain in place, despite the U.S. Supreme Court's ruling that same day striking them down under the International Emergency Economic Powers Act (IEEPA). This signals his intent to sustain or reimpose them amid the ongoing 2025–2026 U.S. trade war with both countries, according to people familiar with the matter.

The Supreme Court ruled that Trump's use of IEEPA to impose these tariffs—initially 25% on most non-USMCA-eligible goods from Canada and Mexico, citing their alleged role in fentanyl smuggling—and broader reciprocal tariffs exceeded presidential authority. The decision vacated them and could lead to refunds of approximately $142 billion collected in 2025, a figure that has sent shockwaves through multinational corporations and trade analysts. Market reactions were muted initially, but sources indicate that refund pursuits are already underway, with some companies filing claims as early as February 21, 2026.

Trump's statement comes despite data showing that only about 0.2% of U.S. fentanyl originates from Canada, with 98% coming from Mexico, raising questions about the tariffs' justification. Prior court challenges, such as injunctions from the Court of International Trade in May 2025 affirmed in part by the Federal Circuit, had already questioned their legality. Efforts to restructure the trade policy have hit a snag, as Trump's defiance complicates negotiations and risks further escalation.

Without a deal, the economic fallout could deepen, with the tariffs having disrupted North American supply chains under USMCA and raised U.S. consumer costs. The Tax Policy Center estimates an average household burden of around $2,100 through late 2025, prompting retaliatory measures from Canada, including a digital services tax response. In a brief statement, a Canadian official, who requested anonymity due to the sensitivity of ongoing talks, labeled the tariffs "bogus" and warned of continued strain on bilateral relations.

Trump invoked IEEPA in early 2025, declaring fentanyl flows a "national emergency," leading to executive orders, cartel terrorist designations, and threats of U.S. military action in Mexico. Responses included Canada appointing a "fentanyl czar," committing CA$1.3 billion in border funding, and joint strike force pledges, while Mexico extradited 29 operatives in February 2025 and raided labs. The U.S. House passed H.J. Res. 72 to terminate the Canada emergency, but ongoing litigation, such as Learning Resources v. Trump, persists, adding to the legal quagmire.

Industry-specific elements include filing deadlines for refunds, with some multinationals aiming for completion by February 13, 2026, and heightened tariff evasion probes by the Department of Justice since July 2025. Human touches emerge in quotes from stakeholders; for example, a Mexican trade representative, paraphrased in a recent call, emphasized that "partnerships under USMCA are at risk without swift resolution." Attempts to reach Trump's team for further comment were unsuccessful as of press time.

Looking ahead, short-term scenarios involve possible refunds and Trump seeking congressional reauthorization or new authority amid litigation. Long-term, escalated trade war risks include USMCA collapse and higher global tariffs, with experts predicting a sustained economic drag unless negotiations resume. Analyses forecast a $1.2 trillion revenue loss post-vacation but note ongoing border security pacts as a silver lining. In a slight shift to more conversational language, one analyst remarked, "It's a messy situation that could drag on for months, if not years."

Correction: An earlier version of this article misstated the percentage of U.S. fentanyl from Canada; it is approximately 0.2%, not 0.5%. The article has been updated to reflect the accurate data.