The looming legal fight injects uncertainty into President Donald Trump's evolving tariffs plan, which has upended the global economy since April 2.

President Donald Trump's steepest tariffs fell into legal limbo this week, casting uncertainty over a major swath of the president's signature economic policy. The Trump administration could ultimately prevail in a court battle over the levies or seek other legal authorities to reimpose some of the tariffs,

President Trump would invoke other tariff authorities if his appeal of a trade court's ruling isn't successful, Commerce Secretary Lutnick said.