ANDREW JOSEPH, EDITOR The service‑truck industry entered 2026 hoping for clarity. Instead, it got a constitutional showdown, a rapid policy pivot, and a tariff landscape that now looks more unpredictable than ever. The U.S. Supreme Court’s 6–3 decision striking down President Donald J. Trump’s use of emergency powers under the International Emergency Economic Powers Act (IEEPA) was expected to reset the rules. Instead, it triggered a new phase of volatility. As Chief Justice John Roberts wrote, “The President asserts the extraordinary power to unilaterally impose tariffs of unlimited amount, duration, and scope.” That interpretation, the Court ruled, exceeded what Congress ever delegated. For manufacturers and fleets already reshaped by years of tariff‑driven inflation, the ruling initially looked like a turning point. The original tariff wave had added $15,000– $30,000 to the cost of a fully outfitted service truck, strained component availability, and narrowed customization options. Domestic builders benefited from the protective buffer, regaining market share and investing in new facilities as reshoring accelerated. But the Court’s decision didn’t unwind those costs—and it didn’t take long for a new tariff mechanism to appear. Within 48 hours, President Trump announced fresh global duties under Section 122 of the 1974 Trade Act, initially at 10 percent and quickly pushed toward the maximum 15 percent. Unlike IEEPA, Section 122 allows temporary tariffs for roughly five months before requiring congressional approval. Exemptions for critical minerals, metals, pharmaceuticals, and other categories soften the blow, but the overall effect is a tariff regime that is mutating rather than easing. The complexity now lies in stacking rules—which tariffs apply together, and which don’t. General duties, antidumping and countervailing duties, and Section 301 tariffs on Chinese goods always stack. Steel and aluminum tariffs can stack on each other. But Section 122 does not stack with Section 232 tariffs on steel, aluminum, copper, lumber, or semiconductors. For builders who rely on all of the above, the difference between stacked and non‑stacked duties can mean thousands of dollars per truck. One stabilizing force remains: the free-trade USMCA (United States-Mexico-Canada Agreement). Goods that qualify under the agreement stay duty‑free, even under Section 122. Canada and Mexico retain preferential access for automotive parts and steel‑intensive components, and the rules of origin continue to shield North American supply chains from global shocks. But that protection has a clock on it. The mandatory six‑year review begins in July 2026, and Trump’s stated goal of “realigning global trade and poaching key industries” suggests the review could become a pressure point. Refunds for unlawful IEEPA‑based tariffs may eventually offer relief, though Trump warned the process “could take years.” The U.S. Chamber of Commerce argues that “Swift refunds… will help support stronger economic growth this year,” but fleets aren’t counting on quick payouts. What’s clear is that the tariff era isn’t ending—it’s evolving. Section 122 duties, the upcoming USMCA review, and ongoing Section 232 tariffs create a policy environment where rules may shift faster than supply chains can adapt. For the service‑truck sector, the next chapter will be defined not by tariff levels but by tariff uncertainty. Tariff whiplash leaves service truck sector with uncertainties A Supreme Court ruling limiting presidential tariff powers collided almost instantly with a new tariff push from President Trump, deepening cost and sourcing uncertainty for service‑truck builders and fleets. GOVERNMENT wildpixel/iStock/Getty Images Plus Photo
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