The warning comes amid a long-lasting dispute over US regulators’ inability to inspect the financial audits of Chinese corporations, such as e-commerce giant Alibaba, that are listed in New York. It also follows a recommendation by the US President’s Working Group on Financial Markets that had asked for measures that would enhance the listing standards on US exchanges in order to “protect investors against risks” from Chinese companies.

Last week, President Trump gave warning to US firms that they would be banned from doing business with the Chinese-owned social media platforms TikTok and WeChat within 45 days. He says the apps are used to spy on US citizens – a claim China stringently denies.