In December 2018, Canadian nationals Michael Spavor and Michael Kovrig were taken into custody in China. It appeared that their detention on December 10 and subsequent indictment under the state secrets law were linked to the arrest of Huawei's chief financial officer, Meng Wanzhou, in Canada on December 1. In English-language media, the pair are frequently and colloquially referred to as the Two Michaels.

On December 1, 2018, Meng Wanzhou, the board deputy chairperson and daughter of the founder of the Chinese multinational technology corporation Huawei, was detained upon arrival at Vancouver International Airport by Canada Border Services Agency (CBSA) officers for questioning, which lasted three hours. The Royal Canadian Mounted Police subsequently arrested her on a provisional U.S. extradition request for fraud and conspiracy to commit fraud in order to circumvent U.S. sanctions against Iran. On January 28, 2019, the United States Department of Justice formally announced financial fraud charges against Meng. The first stage of the extradition hearing for Meng began Monday, January 20, 2020, and concluded on May 27, 2020, when the Supreme Court of British Columbia ordered the extradition to proceed.