WASHINGTON (AP) Facing new trade sanctions and the U. S. On Wednesday, China cracked down on its largest telecom company and issued a sharp reminder that it had not released all its weapons in a trade war with the Trump administration. Chinese state media have warned that Beijing could cut off supplies of foreign minerals widely used in electric cars and mobile phones in the United States. The threat of leveraging China\'s abundant supply of agricultural products The claim that rare earth is a lever in the conflict has caused a sharp loss to the US economy. S. Stocks and long-term declines Yield on long-term bonds The world\'s two largest economies have been deadlocked over allegations that China is taking predatory tactics, including stealing trade secrets and forcing foreign companies to hand over technology to try to replace the United States. S. Technological advantages. The Trump administration has imposed a 25% tariff on $250 billion of Chinese imports and plans to tax $300 billion of imports that have so far been spared. This month, the company blacklisted Huawei, the Chinese telecoms giant, effectively blocking the United States. S. Companies may not provide computer chips, software and other components to it without government approval. The U. S. Huawei claims to be legally responsible for the Communist Party of China, which may order it to carry out espionage on their behalf. However, there is no evidence from Washington that Huawei has done so. Huawei is trying to counter a punitive US sanction. S. Federal court measures In a motion filed late Tuesday in eastern Texas, the company argued that a 2018 law prohibits it from selling telecom equipment to the United StatesS. Government agencies and contractors should be considered non-constitutional. A move to make a summary judgment in a case filed against the United StatesS. The government says the law violates a constitutional ban on \"legislative body trials\" of individual entities. The bill argues that Congress has therefore acted in violation of the Constitution while \"ruling Huawei guilty and blacklisting it. Huawei\'s attorney in the United StatesS. Jones Day\'s Glen Nager claims that Congress alone cannot punish a company under the Constitution, which is what punitive laws do at the time of naming China. The bill aims to drive Huawei out of the US market. S. âx80x94 i. e. To expel it, \"Nager argued. He added that this \"sees Huawei as a tool for the Chinese government\" and has no right to a fair hearing. Steven Schwen, a professor at John Marshall Law School in Chicago, believes that Huawei\'s argument is constitutional, \"given that it has something to do with national security, we can expect the court to be quite respectful to the government. \"The Global Times, a Nationalist Chinese newspaper, warned that China has many ways to retaliate against the United States, including the threat of cutting off rare earth supplies. According to researchers at Bank of America Merrill Lynch, China produced 78% of the world\'s rare earths last year. If the U. S. Without restraint, it will see that \"China is far from using up its cards, and we have the will and determination to fight the United States. \"S. At the end of the day, \"said the newspaper\'s editorial. An official at China\'s top economic planning agency does not rule out the use of rare earths as a counter-measure against the \"us\"S. An unfounded crackdown President Xi Jinping visits rare earth- Earlier this month, companies in southeast Jiangxi province. He called rare earth \"an important strategic resource\" and stressed the importance of having independent core technologies. China Daily reported. China used rare earth sticks before. Five years ago, the World Trade Organization (wto) rejected China\'s efforts to limit exports of rare earths, rejecting China\'s claim that it only wanted to protect the environment and protect the supply of rare earths. Instead, the move appeared to hurt Japan, which had a diplomatic dispute with Beijing. Scott Kennedy, director of the China economic program at the Center for Strategic and International Studies, said that if the Chinese try to weapon rare earths again, they may benefit less. \"This is not a threat. . . \"When the Chinese threaten to cut ties with the Japanese,\" he said . \" First, rare earth users store these minerals for \"Rainy Days. Second, they also figured out how to \"use fewer rare earths to get the same results\" in products such as lasers and magnets \". Third, rare earth substitutes are increasingly using different minerals and chemicals. Kennedy predicted that the market would rebound once investors \"realized the threat was not so serious. Still, he is not optimistic about the United States. S. - China\'s trade talks were suspended on May 10 after 11 rounds of negotiations failed to reach an agreement. U. S. Officials accused the Chinese of violating the agreement they reached earlier. \"The Chinese must first signal that they will talk,\" he said . \". Then they will have to go back to their position before they give up. \"I can\'t see what body language Chinese can speak,\" Kennedy said . \". Wang Yanan reports from Shenzhen, China and from Boston. According to The Associated Press, video producers in Shenzhen, Olivia Zhang, and Beijing writer Christopher Bodin, have contributed to this. 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