U.S. lawmakers have proposed a bill that would ban the sale of American chips and other components to Chinese tech firms deemed to have violated U.S. sanctions.<br />Federal prosecutors are reportedly investigating Huawei on suspicion of stealing trade secrets from T-Mobile - a move likely to escalate already tense U.S.-China trade ties. <br />Huawei said in a statement that it had settled the dispute the telecoms giant two years ago.<br />Chinese tech firm ZTE has also been accused of spying for the Chinese government - allegations it denies.<br />The introduction of the bill also prompted an angry response from Beijing.<br /><br />"I have noticed the relevant news (on the bill) which I felt was hysteria. I believe the action of these few representatives are an expression of extreme arrogance and an extreme lack of self-confidence." <br />
