Huawei: US produced no evidence of it spying

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The giant Chinese telecoms company, Huawei, has filed a lawsuit in the United States, saying that a ban on its equipment violates the US constitution. Idolised around the world as a man bringing a new, more principled type of politics - and yet Canada's Justin Trudeau is under pressure, accused of an act of political immorality. Plus could engineers found a way to cut down on traffic deaths on rural roads?