Just a few days after Cisco "erroneously" advised its employees to avoid non-essential travel to China, Beijing has returned the favor, and according to the SCMP, Chinese researchers working in sensitive hi-tech sectors have been warned not to take any unnecessary trips to the United States "as unease grows in the business community following the arrest of a tech executive in Canada."
Workers at a research agency who can't avoid crossing the Pacific were also told in an internal memo that if they did have to travel to the US, they should remove any sensitive information from their mobile phones and laptops, the SCMP reported citing an anonymous source. The soft travel ban is the result of tensions following the arrest of Huawei Technologies CFO Sabrina Meng Wanzhou in Canada, who despite being released on bail was not allowed to leave the country.
The South China Morning Post reported last month that the US embassy in Beijing had revoked 10-year multiple-entry visas issued to some researchers specialising in China-US relations at government-backed institutions without explanation amid tightened visa scrutiny. Some researchers also had their computers and mobile phones subjected to checks by US customs officers.

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