"The big fear with local lawmakers and regulators is that Huawei's networking products will have secret backdoors built in so that Chinese officials can spy on Americans."
This implies that US equipment company may have created backdoor on their products in other countries. The lawmakers and regulators may reason like, if we can and do it, why not they? I'm not saying US is in err, but simply analyze the possible reality. International politics is becoming even more brutal than domestic infighting. Even scarier, since this time, most likely the consequences will be unprecedented one.