Sources say AMD will use TSMC's new Arizona fab for the production of new HPC AI chips on the 5nm mode. This move begins an AI chip supply chain in the US, with TSMC and Amkor manufacturing and packaging AMD's high-performance chips. The positive news is a boon for the embattled Arizona fab.

An unconfirmed report says that the US Department of Commerce is making a probe into TSMC whether it's breaking America's sanction on Huawei.

High-ranking U.S. politicians and Morris Chang will attend the TSMC's Fab 21 opening ceremony in Arizona in early December.