In this Oct. 31, 2019, photo, attendees walk past a display for 5G services from Chinese technology firm Huawei at the PT Expo in Beijing. Chinese tech giant Huawei is asking a U.S. federal court to throw out a rule that bars rural phone carriers from using government money to purchase its equipment on security grounds, announced Thursday, Dec. 5, 2019. (AP Photo/Mark Schiefelbein)
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