Taiwan Semiconductor Manufacturing Co., the world’s largest contract manufacturer of silicon chips, is set to announce plans to build an advanced chip factory in Arizona as U.S. concerns grow about dependence on Asia for the critical technology.

The plans come as the Trump administration has sought to jump-start development of new chip factories in the U.S. due to rising fears about the U.S.’s heavy reliance on Taiwan, China and South Korea to produce microelectronics and other key technologies.

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