WASHINGTON, D.C. :The U.S. Supreme Court’s justices have voiced significant doubts regarding the legality of President Donald Trump’s sweeping tariffs, which were unilaterally imposed on imports from over 100 countries using the International Emergency Economic Powers Act of 1977 (IEEPA).
The case, considered one of the most significant economic challenges in years, centers on whether the President exceeded his authority, infringing upon Congress’s constitutional power to levy taxes and regulate foreign commerce.
During oral arguments yesterday, the court’s skepticism was evident across the ideological spectrum, focusing on the Trump administration’s justification for using an emergency law—which does not explicitly mention “tariffs”—to reshape the global trade landscape.
Several key justices, including Chief Justice John Roberts and conservative members Amy Coney Barrett and Neil Gorsuch, raised pointed questions to the government’s attorney.
Chief Justice Roberts reportedly questioned whether the power claimed by the administration violated the “major questions” doctrine, which holds that Congress must clearly authorize executive decisions of vast economic or political significance.
Justice Gorsuch expressed concerns that a broad reading of the IEEPA could create a “one-way ratchet” leading to the gradual and continual accumulation of power in the executive branch.
Justice Barrett pressed the government to identify any prior instance where the term “regulate importation” in U.S. code was used to confer the authority to impose tariffs.
The attorney for the private companies challenging the duties, which include several small businesses and a coalition of states, argued that “common sense makes clear that the administration’s interpretation of IEEPA is flawed.”
The core of the dispute rests on the division of power between the President and Congress. While the Trump administration argued that the tariffs were a necessary use of foreign policy power to address the trade deficit and promote U.S. manufacturing, the challengers countered that the tariffs function as a tax, a power explicitly reserved for Congress under the Constitution.
The court is now set to deliberate, with the final ruling expected to have major ramifications for global trade and set a lasting precedent on the boundaries of presidential emergency powers. Lower courts had previously ruled against the Trump administration’s use of the IEEPA for these tariffs.