GOP senator urges Trump ban on Chinese AI for US contractors

Senator Cotton's letter reflects a widening national security debate within the Trump administration over Chinese technology's role in American infrastructure. The timing aligns with growing adoption of open-source Chinese AI models (such as those developed by companies like DeepSeek) among US developers and companies, driven by their accessibility and lower costs compared to proprietary American alternatives. Cotton's distinction between open-source and closed models is significant: he notes that leading US AI models are mostly closed (controlled by single companies), while China has built a more distributed open ecosystem that is easier for American firms to adopt—a competitive asymmetry he views as strategically dangerous when government and contractor systems are involved. The letter bundles three concerns: immediate security (backdoors in existing models), supply-chain vulnerability (chipmaking equipment), and strategic competition (the need for a US-led open AI alternative). Commerce Secretary Lutnick's lack of public response leaves the administration's stance unclear, though Cotton's framing—as a Republican with defense credentials—may carry weight in policy discussions.