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The justices will hear arguments in November — lightning fast by the typical standards of the nation's highest court.

The small businesses and states that challenged the tariffs in court also agreed to the accelerated timetable. They say  illegally used emergency powers to set import taxes on goods from nearly every country in the world, nearly driving their businesses to bankruptcy.

Two lower courts found most of the tariffs were illegally imposed, though a 7-4  left them in place for now.

The Trump administration asked the justices to intervene quickly, arguing the law gives him the power to regulate imports and the country would be on “the brink of economic catastrophe” if the president is barred from exercising unilateral tariff authority.

The case will come before a court that has been reluctant to check Trump’s extraordinary flex of executive power. One big question is whether the justices’ own expansive view of presidential authority allows for Trump’s tariffs without the explicit approval of Congress, which the Constitution endows with the power to levy tariffs.

Three of the justices on the conservative-majority court were nominated by Trump in his first term.

While the tariffs and their erratic rollout raised fears of higher prices and slower economic growth, Trump also used them to pressure other countries into accepting new trade deals. Revenue from tariffs totaled $159 billion by late August, more than double what it was at the same point a year earlier.

Solicitor General D. John Sauer argued that the lower court rulings already affected those trade negotiations.

If the tariffs are struck down, the U.S. Treasury might take a hit by having to refund some of the import taxes it’s collected, Trump administration officials said. A ruling against them could even the nation’s ability to reduce the flow of fentanyl and efforts to end Russia’s war against Ukraine, Sauer argued.

The administration did win over four appeals court judges who found the 1977 International Emergency Economic Powers Act, or IEEPA, lets the president regulate importation during emergencies without explicit limitations. In recent decades, Congress ceded some tariff authority to the president.

The case involves two sets of import taxes, both of which Trump justified by declaring a national emergency: the tariffs first announced in April and the ones from February on imports from Canada, China and Mexico.

It doesn’t include his levies on foreign steel, aluminum and autos, or the tariffs Trump imposed on China in his first term that were kept by Democratic President Joe Biden.

Trump can impose tariffs under other laws, but those have more limitations on the speed and severity with which he could act.