Two senior Democratic lawmakers on Monday asked the US Commerce Department to disclose details and any approvals of continuing licence reviews for potential sales to Chinese firms of Nvidia’s second-most powerful AI chips. US President Donald Trump this month said he would allow sales of Nvidia’s (NVDA.O) H200 chips to China, with the US government collecting a 25 per cent fee, and that the sales would help keep US firms ahead of Chinese chipmakers by cutting demand for Chinese...