The Supreme Court on Tuesday agreed to an unusually speedy review of whether President Donald Trump may invoke emergency powers to impose sweeping tariffs on imports, setting arguments for November in a case that could reshape executive authority over trade.
Lower courts have already found that most of the tariffs were illegally imposed, and dozens of small businesses and several states that sued the administration requested the accelerated schedule. The Trump administration also urged rapid intervention, warning that barring the president from using the disputed authority would threaten ongoing trade negotiations and the broader economy.
At issue is the scope of the 1977 International Emergency Economic Powers Act, or IEEPA, which the administration relied on when Mr. Trump declared national emergencies to justify two sets of import taxes earlier this year: a broad slate of tariffs announced in April on goods from nearly every country, and February levies targeted at imports from Canada, China and Mexico. The case does not include other measures such as tariffs on steel, aluminum and autos or earlier China tariffs maintained by the Biden administration.
Two district courts concluded that most of the challenged tariffs had been imposed unlawfully, but a federal appeals court, in a 7-4 decision, left the levies in place while litigation continued and upheld in part the view that IEEPA allows broad presidential action in emergencies. The Supreme Court’s acceptance of an expedited timetable — unusually fast by the nation’s highest court’s standards — came with the agreement of the plaintiffs who brought the suits.
Solicitor General D. John Sauer, representing the administration, has told lower courts that the law permits the president to regulate imports during declared emergencies and that immediate relief would undermine the United States’ negotiating leverage. Sauer warned that Treasury receipts could be hit if the tariffs are struck down and levy collections must be refunded. He also argued that some of Mr. Trump’s stated policy objectives tied to the tariffs — including efforts to stem the flow of fentanyl and to pressure support for Ukraine — could be harmed by a ruling against the administration.
Opponents, including small businesses that say the levies have driven them toward bankruptcy, and state governments, contend that Congress, not the president, holds the constitutional power to levy tariffs and that Mr. Trump exceeded statutory and constitutional limits by using IEEPA to impose such sweeping import taxes without explicit congressional authorization.
The tariffs have had immediate economic effects. By late August, revenue from the administration’s import taxes had reached $159 billion, more than double the sum collected at the same point a year earlier, figures cited by plaintiffs and courts show. Economists and business groups warn that higher tariffs can raise consumer prices and slow growth, though supporters point to the leverage tariffs provide in forcing other countries to negotiate new trade terms.
Legal scholars say the case presents a central separation-of-powers question that the conservative-majority court could be inclined to consider carefully: whether the executive branch may unilaterally use a broadly worded emergency statute to regulate an area Congress has long controlled. Three of the current justices were nominated by Mr. Trump during his first term, a fact that both sides of the case have noted given the high-profile nature of the dispute.
In recent decades, Congress has delegated certain trade authorities to the executive branch, and administrations have used different statutory avenues to impose tariffs. Some laws provide more procedural checks or time for consultation with lawmakers; IEEPA, enacted during the Cold War era, gives the president sweeping powers to regulate transactions and property during declared national emergencies but has rarely been used to impose broad import taxes.
The Supreme Court’s expedited calendar means the case will return a decision more quickly than is typical for complex statutory and constitutional questions. A ruling in favor of the plaintiffs could require the Treasury to refund some collections and limit future unilateral presidential action on tariffs. A ruling for the administration would likely affirm a broad reading of IEEPA and sustain the president’s capacity to impose rapid, wide-ranging trade measures in declared emergencies.
The case will be watched by businesses, state officials, trade partners and legal observers for its potential to define the boundary between congressional authority to levy tariffs and executive emergency powers, and for its immediate implications for ongoing trade policy and global negotiations.