While Mr Trump reversed protocol by rolling out the red carpet and meeting Mr Xi on the tarmac, the US’ national security machinery never stopped.

In June, the US Commerce Department closed a loophole that let Chinese-owned companies abroad buy advanced AI chips. In July, the Federal Communications Commission blocked the import of foreign-made power inverters, used in solar grids, and advanced robots.

The US Congress earlier this year introduced a bipartisan bill to tighten controls on chipmaking tools.

With the Democrats poised to take control of the House and possibly the Senate in the upcoming midterm elections, expect further US action…

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