US President Donald Trump has ordered the forced divestment of key semiconductor assets acquired by HieFo Corporation, a Delaware-registered company, which he said is controlled by a Chinese citizen, citing national security risks. In an executive order (EO) issued under the Defence Production Act, Trump on Friday said there was “credible evidence” that HieFo’s acquisition of EMCORE Corporation’s digital chips and related wafer design, fabrication and processing businesses could threaten US...