Prominent lawyer Neal Katyal is arguing before the Supreme Court of the United States in a landmark case challenging the legality of Donald Trump’s sweeping tariffs under the International Emergency Economic Powers Act (IEEPA). The hearing tests whether the president can impose tax-like tariffs unilaterally or whether that power lies with Congress. The outcome could reshape executive trade power and protect the constitutional tax and tariff authority of Congress.
Live Updates: Key Justices Show Early Skepticism of Trump’s Tariff Power
The Supreme Court is hearing a case on Wednesday with tremendous consequences for American businesses, consumers and presidential power.
The justices are considering the legality of President Trump’s use of emergency powers to impose tariffs on imports from more than 100 countries. He justified the tariffs as necessary to reduce the trade deficit and spur domestic manufacturing. But they were challenged by a dozen states as well as small businesses, and drew skeptical questioning from both liberal and conservative justices on Wednesday.
D. John Sauer, the U.S. solicitor general, was the first to argue before the justices. He asserted that what was at issue was not the “power to tax,” an authority given to Congress, but the ability to regulate foreign powers. “The fact that they raise revenue is only incidental,” he said of the tariffs.
But the president might not agree: Mr. Trump has often emphasized the vast amounts of revenue being raised by his tariffs and their ability to offset tax cuts.
Several members of the court’s conservative supermajority, including Chief Justice John Roberts, Justice Neil M. Gorsuch and Justice Amy Coney Barrett, joined the court’s three liberal justices to express some skepticism of Mr. Sauer’s arguments.
Here’s what else to know:
- The law: Mr. Trump used the International Emergency Economic Powers Act of 1977 to unilaterally set tariffs on imports from more than 100 trading partners. Hundreds of businesses have said the tariffs forced them to raise prices and cut staff.
- Conservative opposition: A surprising number of conservative, libertarian and business groups sent briefs to the court taking issue with Mr. Trump’s signature trade initiative.
- Legal principle: An expected point of contention is whether Mr. Trump’s tariff actions run afoul of the so-called major questions doctrine. It is a principle that boils down to: If Congress wants to give the president power to take major economic action, it will say so plainly. Chief Justice Roberts said during the argument that the doctrine seemed to apply here.
- Emergency powers: President Trump claimed trade deficits were an emergency when he announced sweeping tariffs on the rest of the world in April. But that declaration is contentious, even among economists and policymakers who think the United States is too dependent on imports.
- Power: The groups challenging Mr. Trump’s tariffs argue that the measures overstep the principle that Congress cannot delegate its legislative powers to other branches of government, an idea known as the “nondelegation doctrine.”
Table of Contents
In a case that legal scholars consider among the most consequential of recent decades, Indian-American attorney Neal Katyal stands before the highest court in the land — the Supreme Court of the United States — to argue against former President Donald Trump’s sweeping tariff program. The case, often referred to as the tariffs case, strikes at the heart of how far executive power can go in imposing tariffs, taxes and economic policy—and whether the power to levy tariffs lies strictly with Congress.
Background of the case
President Trump invoked the International Emergency Economic Powers Act (IEEPA) — a 1977 law originally intended for national emergencies involving foreign assets and transactions — to impose wide-ranging tariffs on numerous imports, using national-security and trade-deficit rationales. Several small businesses, along with states, challenged these actions, arguing the tariffs were essentially taxes and duties and therefore could only be authorised by Congress. Lower courts, including the Court of Appeals for the Federal Circuit, expressed deep doubt about the administration’s arguments. AP News
Neal Katyal’s role
Neal Katyal, a former Acting U.S. Solicitor General under President Obama and a veteran Supreme Court advocate having argued more than 50 cases, has been chosen to lead the argument for the plaintiffs. His argument emphasises that tariffs function as taxes, siphoning dollars from American consumers and businesses and depositing them into the U.S. Treasury — a power constitutionally entrusted to Congress. According to reporting, Katyal told the Court:
“Tariffs are taxes. They take dollars from Americans’ pockets and deposit them in the U.S. Treasury — our founders gave that taxing power to Congress alone.” The Guardian
He also contends that the IEEPA never mentions tariffs, and no prior president had used the law for that purpose — underscoring the doctrine of congressional clarity and the major-questions doctrine applied by the Court. Moneycontrol
What the Court is asking
During oral arguments, the justices pressed hard on whether the statute cited (IEEPA) was designed to allow the president to impose taxes and duties or whether it was confined to more traditional emergency authorisations. Conservative justices, typically strong on executive power, voiced scepticism. In one sharp exchange, Chief Justice John Roberts stated that the imposition of “tax‐like” tariffs has always been a power of Congress. The Guardian
The Court will weigh whether this case invokes the major-questions doctrine — the principle that when a government action has vast economic or political significance, Congress must clearly authorise it. Many analysts view this as a moment of reckoning for executive power in trade policy.
Stakes for the country
The outcome of this challenge is enormous. If the Court sides with Trump’s position, the president would wield unprecedented authority over trade policy, tariffs and taxation without congressional oversight — a shift that could reshape economic policy, foreign trade agreements, and the balance of power among branches of government. If the Court rules against the tariffs, it will reinstate Congress’s central role in tax and tariff policy, curbing executive overreach.
Businesses, consumers and global trade partners are likely to feel the effects either way. The tariffs under challenge were described as “one of the largest tax increases in American history” by critics, given how broadly they applied.
Personal & symbolic significance
For Neal Katyal, the case marks another landmark chapter in his career. His background as an Indian-American, his track record in constitutional law, and his role in high-profile cases against executive overreach all converge in this moment. The Economic Times The case also carries symbolic weight: it pits one of the country’s most skilled appellate advocates against perhaps the most assertive president in modern American history. For legal commentators, the outcome will shape how future presidents approach trade policy, national emergencies, and the limits of unilateral action.
Conclusion
As arguments conclude and the justices deliberate, the world watches. Whether tariffs stay or fall, whether executive privilege in trade is expanded or constrained, the decision will echo far beyond the courtroom. In the middle of it all is Neal Katyal — not just arguing another case, but defending the constitutional architecture of American governance.
In the words of the plaintiffs’ counsel, it isn’t simply about politics — it’s about preserving the duty that “no one man controls the nation’s economic fate.”
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Keywords: Neal Katyal, Trump Tariffs Case, Supreme Court Tariff Hearing, Donald Trump Tariffs, IEEPA Law, Executive Power, U.S. Supreme Court, Trade Policy