Zen Brief

Technology and trade dominate the day: a lawsuit over tariffs on Canadian goods, a U.S. ban on DeepSeek, and IMF concern over China's AI progress. An AI diagnostic tool heads toward FDA review, and an NFL upset prompts oddsmakers to take another look.

1. 1 Court to Rule on Trump's Tariff AuthorityA new lawsuit says the administration exceeded its legal authority with fresh tariffs on Canadian goods, testing presidential trade power.
2. 2 AI Face-Scan Diagnostics Navigates FDA ReviewA single-photo AI system for gauging patient severity is moving toward FDA review, raising questions about validation standards.
3. 3 US Bans Chinese DeepSeek AI Over Security RisksThe U.S. government banned DeepSeek's AI model, a sign of deepening tech decoupling from China with stakes for Silicon Valley.
4. 4 Cardinals' upset win exposes NFL betting model flawsArizona's upset win over Los Angeles has oddsmakers re-examining how they price NFL upsets in a volatile season.
5. 5 IMF Flags China AI Risk to US Tech ValuationsAt the IMF meeting in Bangkok, finance leaders warned that China's AI progress could undermine the valuations behind Wall Street's tech rally.