Washington, June 2 Two senior Democratic senators accused the Trump administration of allowing a loophole in US export controls that may have enabled some of America's most advanced artificial intelligence chips to reach Chinese companies, potentially boosting Beijing's military capabilities.Senator Elizabeth Warren of Massachusetts and Senator Andy Kim of New Jersey said the administration's failure to update export-control regulations over the past 18 months may have inadvertently allowed advanced US technology to flow to firms headquartered in China."On Sunday afternoon, the Trump Administration revealed that its failure to update export control regulations over the last year and a half may...