Huawei ban clouds U.S.-China trade talks, tech sector

WASHINGTON/BEIJING (Reuters) - A U.S. bid to block China's Huawei Technologies from buying vital American technology threw into question prospects for sales at some of the largest tech companies and drew a sharp rebuke from Beijing, further ratcheting up tensions over trade.Shares of Huawei's U.S. suppliers fell on fears the Chinese firm would be forced to stop buying American chips, software and other components after the Trump administration banned it from buying U.S. technology without..