In this Jan. 21, 2020, file photo, Huawei chief financial officer Meng Wanzhou, who is out on bail and remains under partial house arrest after she was detained last year at the behest of American authorities, leaves her home to attend a hearing in British Columbia Supreme Court, in Vancouver. New court documents accuse the United States president of "poisoning" the extradition case against Huawei's CFO to further the American trade agenda. THE CANADIAN PRESS/Jonathan Hayward