Core Viewpoint - Rare earth, metals, and mineral stocks experienced a significant surge following President Trump's strong social media response to China's export control measures on rare earth elements, which he labeled as "hostile" and "surprising" [1][2]. Group 1: Government Actions and Responses - President Trump criticized China's tightening of export controls, indicating that China has begun notifying other countries about plans to impose restrictions on a variety of materials, including rare earth elements [2]. - Trump mentioned that the letter from China detailing the export controls was extensive and specified the elements they intend to withhold from other nations [3]. - He suggested that the U.S. might need to respond with financial measures, including a potential "massive increase" in tariffs on Chinese goods [3]. Group 2: Market Reactions - Following the developments, shares of U.S. domestic rare earth producers saw significant increases, with USA Rare Earth, Inc. (NASDAQ:USAR) rising by 19.13% and Critical Metals Corp. (NASDAQ:CRML) climbing 21.69% [5]. - Other companies in the sector also experienced movements, indicating a broader market reaction to the news [6].