President Donald Trump indicated that the "full benefit" of his tariff policies has not yet taken hold, suggesting that stockpiles of goods amassed to avoid tariffs are dwindling

The cases before the Supreme Court target tariffs imposed under IEEPA. There are more-traditional ways for presidents to impose the levies, and Trump has also made use of those laws to bolster sector-specific tariffs, including those on aluminum, steel and copper.

The European Union’s antitrust chief ruled out easing the bloc’s tech rulebook, after US Commerce Secretary Howard Lutnick said Brussels needed to change its digital regulations in order to get a deal to lower steel and aluminum tariffs.