In October 2022, the Biden administration placed restrictions on the export to China of high-end American chips and some tools used to make them. It also prohibited other countries from selling those goods if they used any U.S. technology to produce them. It followed by expanding the curbs several times, most recently in December when it banned the export to China of certain memory chips essential to the training of AI algorithms. Tension between national-security hawks and the biggest American technology companies over China policy has burst out into the open. The trigger: a Biden administration plan to limit the global sale of advanced artificial-intelligence chips. Can US win the trade wars?

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