不到24小时，特朗普突然改口，全球关税上调5%，中美博弈还在继续

Core Viewpoint - Trump's sudden decision to raise the global import tariff from 10% to 15% has drawn global attention, with some analysts suggesting that China may be in a more advantageous position in this trade dispute [1][8]. Group 1: Tariff Policy Changes - On February 21, Trump announced the increase of global import tariffs to 15%, citing legal limits, just a day after temporarily setting them at 10% due to a Supreme Court ruling [1][3]. - The Supreme Court ruled that Trump's previous tariff imposition lacked legal authority, leading to over 1,000 U.S. companies filing lawsuits for refunds on excess tariffs [3][10]. - Trump's rapid policy shift reflects his need to find a legal basis for tariffs after the Supreme Court's decision, which deemed his previous actions illegal [5][9]. Group 2: Legal and Economic Implications - The legal basis for the new tariffs under the Trade Act of 1974 is questionable, as it requires a serious international balance of payments issue, which is not clearly defined in the current U.S. economic context [8][9]. - The fluctuating tariff policies create uncertainty for U.S. businesses, affecting long-term planning, hiring, and investment decisions, which could lead to economic instability [8][10]. - The increase in tariffs is expected to raise costs for U.S. consumers, as businesses may pass on the increased costs, leading to inflationary pressures [8][10]. Group 3: Negotiation Dynamics - Trump's loss of legal support for his tariff policies has diminished his negotiating power, as he can no longer rely on previous threats of tariffs to compel concessions from other countries [9][10]. - China has maintained a calm and rational approach, refusing to be swayed by Trump's erratic policy changes, which has allowed it to retain more negotiating leverage [10][11]. - The upcoming meetings between U.S. and Chinese leaders will be crucial, with China poised to assert its demands while Trump faces domestic pressures to reach an agreement [11].