After passing unanimously in the US Senate on 20 May, the Holding Foreign Companies Accountable Act is heading for the House of Representatives, and US President Donald Trump is expected to sign it into law.

The law requires that all companies listed on US stock exchanges submit to audits reviewable by the US Public Company Accounting Oversight Board (PCAOB), and non-compliant firms can be delisted after three years. This has generated talk that all Chinese firms could disappear from US exchanges.