Neal Katyal's Supreme Court victory reshapes presidential power over tariffs

Neal Katyal, the son of Indian immigrants and a prominent legal figure, has become the public face of a landmark Supreme Court ruling against former President Donald Trump's tariffs. The decision marks a significant shift in limiting presidential authority over emergency economic powers.

Born in Chicago, Katyal graduated from Dartmouth College and Yale Law School before clerking for Supreme Court Justice Stephen Breyer. He later served as Acting Solicitor General under President Obama, arguing over 50 cases before the Supreme Court. His legal career also includes roles as a Special Prosecutor in the George Floyd murder case and author of Impeach: The Case Against Donald Trump.

The Supreme Court ruled that the U.S. Constitution grants only Congress—not the president—the power to impose taxes and tariffs. The case centred on Trump's use of the International Emergency Economic Powers Act (IEEPA), which Katyal argued did not authorise independent tariff authority. Chief Justice John Roberts wrote in the decision that the Founders intentionally reserved taxing power for Congress, not the executive branch.

Katyal framed the ruling as a constitutional milestone, reinforcing the separation of powers and core American principles. The decision is expected to curb future presidents from using emergency economic powers to impose sweeping tariffs without congressional approval. His contributions have earned him the Justice Department's highest civilian honour, the Edmund Randolph Award, as well as recognition as Litigator of the Year.

The ruling sets a clear legal boundary on presidential economic powers, ensuring that tariffs require congressional authorisation. Katyal's role in the case underscores his influence in shaping constitutional law, with lasting implications for how future administrations may use emergency authorities.