Tokyo between a rock and a hard place as Beijing threatens to retaliate The "chip wars" between the US and China have taken a new turn with members of a House Select Committee threatening action against Japanese companies if the country does not do more to restrict sales of chipmaking kit to China.

The US is investigating whether Huawei accessed advanced American chip technology via TSMC, despite a ban on such sales.

The U.S. is reportedly probing whether TSMC is making AI or smartphone chips with Huawei, currently barred from accessing chips made with U.S. technology.

A US Commerce Department investigation into a possible sanctions breach by TSMC could spell trouble for Apple, as its chip partner could face penalties that ultimately harm production of iPhone and Mac chips.