U.S. President Donald Trump said Saturday he will raise a new global tariff to 15% from 10%, a day after the Supreme Court upheld a lower court ruling blocking his use of the 1977 International Emergency Economic Powers Act (IEEPA) to justify sweeping duties, including “reciprocal” tariffs on South Korea and other trading partners. In a social media post, Trump criticized the decision and said the increase would take effect immediately.

Hours after Friday’s ruling, Trump signed a proclamationimposing a temporary 10% global tariff under Section 122 of the 1974 Trade Act, effective 12:01 a.m. Tuesday Washington time. U.S.