The U.S. Supreme Court is set to hear arguments on whether President Donald Trump exceeded his authority by imposing sweeping tariffs under the 1977 International Emergency Economic Powers Act (IEEPA). Lower courts have ruled that IEEPA does not authorize such broad trade actions without clear congressional approval. Trump’s administration argues otherwise, saying the statute empowers the president to “regulate importation” during declared emergencies, which they interpret to include the power to impose tariffs.
