Washington: U.S. President Donald Trump announced on Saturday that he will raise a new global tariff to 15 percent from the previous 10 percent. This decision comes in the wake of his criticism of the Supreme Court's ruling against his administration's imposition of sweeping emergency duties.

According to Yonhap News Agency, Trump made this announcement via a social media post, a day after the Supreme Court upheld a lower court's ruling against his use of the 1977 International Emergency Economic Powers Act (IEEPA) to justify the tariffs. These included "reciprocal" tariffs targeting South Korea and other trading partners. Trump stated, "Please let this statement serve to represent that I, as President of the United States of America, will be, effective immediately, raising the 10 percent Worldwide Tariff on Countries, many of which have been 'ripping' the U.S. off for decades, without retribution (until I came along!), to the fully allowed, and legally tested, 15 percent level," on Truth Social.

Trump criticized the court's ruling as "ridiculous, poorly written and extraordinarily anti-American." He indicated that over the next few months, his administration would work on determining and issuing "new and legally permissible" tariffs, aiming to continue the process of "Making America Great Again."

Following the ruling on Friday, Trump signed a proclamation to impose a temporary 10 percent global tariff under Section 122 of the 1974 Trade Act. The White House confirmed that this would take effect at 12:01 a.m. on Tuesday, Washington time.

U.S. Trade Representative Jamieson Greer announced plans to initiate investigations under Section 301 of the 1974 Trade Act. This law permits the USTR to impose tariffs or other import restrictions to address foreign trade practices. Greer outlined that these investigations would likely cover "most major trading partners" and focus on issues such as industrial excess capacity, forced labor, pharmaceutical pricing practices, discrimination against U.S. technology companies, and digital goods and services.