May 7 (UPI) -- A 10% global tariff that President Donald Trump levied after the Supreme Court blocked other tariffs he'd enacted was ruled illegal by a U.S. trade court.

The decision, which was handed down in a split ruling from the Court of International Trade, said the that Trump law attempted to use for the tariff does not apply and may place an additional limit on his ability to levy tariffs, The New York Times and The Washington Post reported.

The Supreme Court ruled in February that the Trump administration's tariff regime enacted over the course of 2025 because it had attempted, improperly, to levy them under the International Emergency Economic Powers Act.

In response, Trump announced a "10% global tariff under Section 122" that would be in addition to all other tariffs that were not levied under the IEEPA.

Section 122 of the Trade Act of 1974 allows a president to create a "temporary import surcharge" of up to 15% to prevent the depreciation of the dollar in foreign exchange markets for up to 150 days with Congressional approval.