US Investigates If DeepSeek Got Nvidia Chips From Firms in Singapore, Report Says

1. U.S. investigates DeepSeek for bypassing chip sales export restrictions. 2. DeepSeek's success contrasts with U.S. export controls on China. 3. Nvidia insists its customers comply with laws and regulations. 4. Investments in Singapore don't imply sales diverted to China. 5. OpenAI probes DeepSeek's potential misuse of its data.