Taiwan Semiconductor Manufacturing Co has begun producing advanced four-nanometer chips for U.S. customers in Arizona, Commerce Secretary Gina Raimondo told Reuters, a milestone in the Biden administration's semiconductor efforts.

In November 2024, the US Commerce Department finalised a $6.6bn grant for TSMC for semiconductor production in Arizona.

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In a recent interview with , US Commerce Secretary Gina Raimondo announced that TSMC has initiated production of 4nm process technology chips at its Arizona facility in recent weeks, serving American customers.

The Taiwanese government has lifted restrictions that limited domestic chip manufacturers such as TSMC from producing 2nm chips in foreign fabs. According to a report from Taipei Times, the minister of economic affairs J.W. Kuo told reporters in Taiwan that “those were old rules” and “times have changed.”

TAIPEI (Taiwan News) — Taiwan Semiconductor Manufacturing Company has begun 4 nm production at its first fab in Arizona.

TSMC agreed to expand its planned investment by US$25 billion to US$65 billion and to add a third Arizona fab by 2030.

Apple is already testing the initial batch of processors produced for its devices by TSMC Arizona, reports Nikkei Asia. To begin with, the tests intend to compare the Arizona output to see if the quality is similar to chips produced in TSMC’s cutting-edge fabs in Taiwan.