The US authorities have focused attention on Nvidia in its renewed effort to control advanced chips and stop them from getting into the hands of the Chinese.
The House of Representatives’ China Committee intensified its efforts to probe Nvidia, demanding an explanation over how a Chinese AI company, DeepSeek, gained access to export-controlled American chips. According to FT, the Committee Chairman, John Moolenaar (Republican) and Raja Krishnamoorthi (Democrat), in a letter on April 16, asked Nvidia to clarify its sales in China and Southeast Asia, amid fears that DeepSeek used advanced Nvidia chips to train models that threaten US national security.

This development is part of Washington’s campaign to curb China’s access to cutting-edge American technology, especially AI-enabling semiconductors. For years, US authorities have steadily tightened export controls to prevent Chinese companies from acquiring hardware with military or surveillance capabilities. The case of DeepSeek is now seen as a potential loophole, with lawmakers alarmed by reports that it accessed Nvidia’s H800 chips, designed for China but later banned by the Joe Biden administration.
Nvidia insists it complies fully with US export laws, claiming it does not knowingly sell restricted chips to China and that its $23.7 billion in Singapore revenue is tied to billing addresses, not end users. However, the US is concerned that chips may be reaching Chinese firms through subsidiaries and partners in third countries. DeepSeek’s ties to tech giants like ByteDance and Tencent, and its data transmission through China Mobile, further fuel fears about espionage and misuse.

The inquiry reinforces Washington’s resolve to prevent US-developed AI technology from advancing Beijing’s ambitions. The US government’s focus on Nvidia indicates a wider strategy to prevent vulnerabilities and enforce stricter controls on the global semiconductor supply chain.
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