>> No Chinese firm should be permitted to own a controlling interest in any communication system widely used in the US. > That can backfire very quickly, when

>> No Chinese firm should be permitted to own a controlling interest in any communication system widely used in the US. > That can backfire very quickly, when Europe is going to say the same – no US firm should be permitted to control any system widely used in the EU. China is a somewhat special case, though. It's an explicitly authoritarian oligarchy that have a proclivity for censorship and control. They should get more scrutiny from other liberal regimes than the US. Though, if Europe wanted to disadvantage US communication products, I think they'd have a more than enough justification by citing NSA mass surveillance.