Washington: U.S. President Donald Trump warned Friday that losing his administration's ability to tariff countries that treat the United States unfairly would be a "terrible blow" to the U.S., describing tariffs as an "overwhelming benefit" to America. Trump made the remarks in a social media post as the U.S. Supreme Court deliberates the legality of Trump's use of the International Emergency Economic Powers Act to impose across-the-board, country-specific tariffs on America's trading partners, including South Korea. According to Yonhap News Agency, Trump expressed the importance of maintaining tariff authority for the United States. He emphasized that tariffs have been a significant advantage for the nation's security and prosperity, claiming they have contributed positively in ways unprecedented in history. In his message posted on Truth Social, Trump stated, "Tariffs are an overwhelming benefit to our Nation, as they have been incredible for our National Security and Prosperity (like nobody has ever seen before!)." Trump further highlighted the potential consequences of losing tariff authority, describing it as a severe setback for the nation. He reiterated, "Losing our ability to Tariff other countries who treat us unfairly would be a terrible blow to the United States of America." He concluded his statement by expressing gratitude for the attention given to this matter. Last month, Trump warned that a ruling against his tariff policy by the top court could represent the "biggest threat in history" to U.S. national security. His administration has utilized tariffs to encourage foreign investment, increase government revenue, and boost domestic manufacturing, considering them vital tools in the country's economic strategy.