Sebastián Salgado · Author
April 23, 2026
Share:
A constitutional test with global trade consequences The U.S. Supreme Court’s hearings this month on President Trump’s emergency tariffs mark a rare collision between constitutional law and global supply chains. At issue: whether the president exceeded his authority under the International Emergency Economic Powers Act (IEEPA) by imposing tariffs on nearly every trading partner, citing trade deficits and national emergencies as justification. Key justices, Amy Coney Barrett , Neil Gorsuch , and John Roberts , signaled skepticism , questioning how an emergency statute from 1977 could justify tariffs that function as taxes on American consumers. Roberts called them a “foreign-facing tax,” underscoring that taxing authority “has always been the core power of Congress.” If the Court rules against Trump, it could redraw the boundary between executive power and congressional oversight —and reshape how trade policy is conducted for years to come. Tariffs aren’t ending, they’re changing lanes Even a defeat for IEEPA tariffs won’t mean a return to free trade. As Ana Swanson reported in The New York Times , the administration is already preparing “Plan B” options using other authorities: Section 122 (Trade Act of 1974): allows a 15% global tariff for 150 days to address trade imbalances. Section 232 (Trade Expansion Act of 1962): tariffs on national security grounds, already covering roughly one-third of U.S. imports. Section 301 (Trade Act of 1974): used for retaliatory tariffs against “unfair trade practices,” such as those imposed on China. These legal routes are slower but sturdier , requiring investigations and public consultations that make tariffs less arbitrary, but no less impactful. The messy middle: refunds, pricing, and volatility If IEEPA tariffs are ruled unlawful, importers could be entitled to billions in refunds . According to CNN Business , the refund process could become “a giant mess”, requiring importers to track liquidation status, file protests, and possibly wait years for reimbursements. Some investment banks have already begun buying refund claims from importers at steep discounts, anticipating a payout if the tariffs are struck down. For Mexico, risk shifts, not disappears For Mexican exporters and nearshoring manufacturers, a ruling against IEEPA would ease the threat of blanket U.S. tariffs on all goods. But risk will shift to sector-specific investigations : auto parts, electronics, and steel are likely to face deeper scrutiny under Section 232 (national security) and 301 (trade practices). Analysts at El Financiero note that while Mexico’s diversified export base offers some insulation , the 2026 USMCA review could reopen debates on rules of origin (ROO) and compliance verification. The takeaway: clarity will replace chaos, but only for those ready to document every step of their supply chain. The real story: tariffs by another name Behind the legal drama lies a deeper truth. Tariffs have become a structural feature of U.S. trade strategy , not an exception. As Brookings scholars Peter Shane and Robert Litan note, even a narrow ruling could formalize presidential authority to reimpose similar tariffs through other laws, keeping overall protectionist pressure intact. In other words, America’s tariff era won’t end, it will evolve. The style may shift from “emergency decree” to “procedural defense,” but for businesses, the practical result is the same: continued pressure on pricing, sourcing, and customs compliance.
.png)
