Huawei sues the US government

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Huawei's announces it will sue the US government just hours after extradition hearings started in Canada of one of its senior executives wanted in the US. As questions are being asked in the US how two young children died in the custody of the border authorities, we have a report from their home town in Guatemala. Can smart road signs help reduce the number of accidents on country roads? We talk to the woman's who's developed them.