US President Donald Trump moved swiftly on Friday to replace tariffs struck down by the Supreme Court with a temporary 10% global import duty for 150 days while opening investigations under other laws that could allow him to re-impose the tariffs.
Trump told a briefing he was ordering new tariffs under Section 122 of the Trade Act of 1974, duties that would be added to existing tariffs. These would partly replace the 10% to 50% tariffs under the 1977 International Emergency Economic Powers Act, which the top court declared illegal.
Trump later said on Truth Social that he had signed an order imposing tariffs on all countries, "which will be effective almost immediately."
A spokesperson for the US Customs and Border Protection agency declined to comment when asked when collections of the illegal IEEPA tariffs would halt at ports of entry.
Later on Saturday, Trump announced that he would aim to apply "the fully allowed, and legally tested, 15% level" tariff on all countries, "many of which have been “ripping” the US off for decades," according to the American president.
Trump's Treasury Secretary, Scott Bessent, said the new 10% duties and potentially enhanced tariffs under the Section 301 unfair practices statute and the Section 232 national security statute would result in virtually unchanged tariff revenue in 2026.
"We will get back to the same tariff level for the countries. It will just be in a less direct and slightly more convoluted manner," Bessent told Fox News, adding that the Supreme Court decision had reduced Trump's negotiating leverage with trading partners.
Never-used presidential powers
The never-used Section 122 authority allows the president to impose duties of up to 15% for up to 150 days on any and all countries to address "large and serious" balance-of-payments issues. It does not require investigations or impose other procedural limits. After 150 days, Congress would need to approve their extension.
"We have alternatives, great alternatives," Trump said. "Could be more money. We'll take in more money, and we'll be a lot stronger for it," Trump said of the alternative tools.
While the administration will likely face legal challenges, the Section 122 tariffs would lapse before any final ruling could be made, said Josh Lipsky, international economics chair at the Atlantic Council, a think tank in Washington.
Trump said his administration was also initiating several new country-specific investigations under Section 301 of the Trade Act of 1974 "to protect our country from unfair trading practices of other countries and companies."
Faster investigations
Trump's shift to other statutes, including Section 122, while initiating new investigations under Section 301, had been widely anticipated, but these have often taken a year to complete.
The 10% tariffs only last for five months, but Trump said that would allow his administration to complete investigations to justify higher tariffs.
Asked if rates would ultimately end up being higher after more probes, Trump said: "Potentially higher. It depends. Whatever we want them to be."
He said some countries "that have treated us really badly for years" could see higher tariffs, whereas for others, "it's going to be very reasonable for them."
The fate of dozens of trade deals to cut IEEPA-based duties, as well as negotiations with major US trading partners, remained unclear in the wake of the ruling, though Trump said he expected many of them to continue. He said deals that are abandoned "will be replaced with the other tariffs."
"This is unlikely to affect reciprocal trade negotiations with our trading partners," said Tim Brightbill, trade partner with the law firm Wiley Rein in Washington. "Most countries would prefer the certainty of a trade deal to the chaos of last year."
US Trade Representative Jamieson Greer said details on new Section 301 investigations would be revealed in the coming days, adding these are "incredibly legally durable." Trump relied on Section 301 to impose broad tariffs on Chinese imports during his first term.
Refunds to be 'litigated'
The Supreme Court's ruling puts about $175 billion in tariff revenue collected over the past year subject to potential refunds, according to estimates provided to Reuters by Penn-Wharton Budget Model economists.
Asked whether he would refund the IEEPA duties, Trump said, "I guess it has to get litigated for the next two years," suggesting that a quick, automatic refund process was unlikely.
Speaking in Dallas, Bessent told business leaders that since the Supreme Court did not provide any instructions on refunds, those were "in dispute," adding: "My sense is that could be dragged out for weeks, months, years."
More procedures
Part of the reason Trump opted for IEEPA to impose tariffs last year was that the 1977 sanctions statute allowed swift, broad action with almost no constraints. Until Friday, he had also used it as a cudgel to swiftly punish countries over non-trade disputes, such as Brazil's prosecution of former president and Trump ally Jair Bolsonaro.
While Trump's new investigations will prolong tariff uncertainty, they could inject more order into his tariff policy by forcing him to rely on trade laws that have well-understood procedures, research, and public comment requirements, and longer timelines, said Janet Whittaker, senior counsel with Clifford Chance in Washington.
"The administration will need to follow these set processes, conduct the investigations, and so for businesses, that means more visibility into the process," Whittaker said.
Robert Lighthizer, Trump's trade chief during his first term, said on Fox News that he hoped Congress would revise decades-old trade laws to give Trump new tariff tools.
"I think there's consensus in this Congress that we have to change the old system, and I hope that they will take this as an opportunity to do that," Lighthizer said.