Tall chip tale? Huawei's backup plans leave experts unconvinced

SAN FRANCISCO/HONG KONG (Reuters) - Chip experts are calling out Huawei for its claims that it could ensure a steady supply chain without U.S. help, saying the technology the Chinese telecoms network gear maker buys from American companies would be "hard to replace".The Trump administration officially added Huawei to a trade blacklist on Thursday, enacting restrictions that will make it difficult for the tech giant to do business with American firms, in its latest broadside against the company..