Republicans Push ITC for Chip Ban, Putting TSMC’s $165B Arizona Deal at Risk
TSM•Republican Reps. Zinke, Sheehy, Marshall and Moreno urged the U.S. International Trade Commission to block imports of chips made by TSMC’s advanced nodes over alleged patent infringements, challenging special treatment. TSMC has invested $165 billion in Arizona and warns exclusion orders would disrupt U.S. AI and defense chip supply.
1. Republican Lawmakers Urge ITC Action
A group of Republican lawmakers led by Rep. Ryan Zinke and Sens. Tim Sheehy, Roger Marshall and Bernie Moreno has asked the U.S. International Trade Commission to block imports of chips produced on TSMC’s most advanced nodes, arguing strict enforcement of U.S. patents is needed to protect American competitiveness.
2. Patent Dispute Overview
The legal push stems from a complaint by Longitude Licensing and Marlin Semiconductor under IPValue Management, which alleges that chips produced on TSMC’s leading-edge nodes infringe patents acquired from UMC in 2021, particularly those used in AI accelerators and other high-performance devices.
3. U.S. Supply Chain and Investment Risks
TSMC’s $165 billion commitment to Arizona manufacturing projects could be jeopardized if exclusion orders halt chip shipments to U.S. customers, raising concerns over continuity of semiconductor supply critical for AI research and defense system production.
4. Policy Implications and Divided Views
Proponents of an exclusion order insist no company should get preferential treatment regardless of strategic role, while opponents warn that blocking TSMC chips risks stalling AI development, undermining defense procurement and weakening domestic chip production capacity.
