https://www.cnbc.com/2018/12/06/huaweis-difficult-history-with-us-government.html

The arrest of Huawei CFO Meng Wanzhou in Canada for possible Iran sanctions violations yesterday has deeper roots in a difficult legal history between the hardware giant and U.S. regulators and intelligence agencies.

The U.S. government has spent the better part of the last decade taking issue with the company, one of China's largest, over topics including the firm's alleged espionage ties to the Chinese government and allegations of a long history of intellectual property theft. Huawei is one of China's largest companies, with a reported $100 billion in revenue in 2018 and 180,000 employees across 170 global offices.