Meng Wanzhou, chief financial officer of Huawei Technologies Co., right, leaves her home under the supervision of security in Vancouver, British Columbia, Canada, on Wednesday, Dec. 12, 2018. President Donald Trump is talking about wading into the legal fight of the Huawei CFO, saying in an interview that he would intervene in U.S. efforts to extradite Meng if it helped him win a trade deal with China. Photographer: Ben Nelms/Bloomberg via Getty Images