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Competing claimants such as Vietnam, the Philippines, Taiwan, Malaysia and Brunei have staked claims on islands and various zones in the sea.

In March, a county resident who had recently traveled through Los Angeles International Airport on a China Airlines flight from Taipei, Taiwan, tested positive.

The winner, chosen from a shortlist of 11 photographers, was Daniel Dian-Ji Wu, Taiwan, 16 years old, for his image of a skateboarder doing a trick, silhouetted against a sunset in Venice Beach, Los Angeles.

The advanced chips that power them are made in Taiwan, by the world's largest chip manufacturer, TSMC.

And, given that Taiwan and other parts of Asia have the secret sauce on creating high-precision chips, is it even possible for the US to produce them too, and at scale?