坚持半年后，美国稀土战略面临失败，美驻华大使责怪中国

Group 1 - The U.S. has taken measures to reduce its dependence on Chinese rare earth resources, including signing cooperation agreements with countries like Australia and Japan, and implementing various stimulus policies to support domestic rare earth companies [1] - Despite these efforts, the U.S. government has admitted it cannot provide actual support in the rare earth sector, and the plan to set a price floor to support U.S. rare earth companies has been abandoned due to a lack of cost advantages [3][5] - The strategy of setting a price floor was intended to act as a subsidy to protect U.S. rare earth companies from market fluctuations, but it ultimately failed due to the need for long-term government funding and the operational difficulties in establishing a reasonable minimum price [5][6] Group 2 - The U.S. Energy Department has refuted reports regarding the failure of the price floor strategy but has not clarified the specifics of the minimum price issue [8] - The U.S. Ambassador to China has expressed complaints about China's export control measures, which require foreign companies to provide supply chain information, claiming it violates confidentiality obligations [8][10] - The root cause of the rare earth supply difficulties is attributed to the U.S.'s own unfriendly policies, including tariffs and sanctions against Chinese companies, which have harmed bilateral relations [10][12]