"TSMC has been a strong partner in this effort, taking unprecedented actions to address this challenge," it said in a statement. 

"We are confident that our capacity expansion plan including the advanced 5nm semiconductor fab in Phoenix, Arizona - one of the largest foreign direct investments in U.S. history - will enable us to support the industry in driving long-term stability in semiconductor supplies."

(Reporting by Ben Blanchard; Editing by Shri Navaratnam)