Pompeo condemns China's proposed Hong Kong national security law - CNN

"(They are) completely destroying Hong Kong."

Under the "One Country, Two Systems" policy, Hong Kong retains limited democracy and civil liberties despite being under Beijing's control.

The autonomous region also holds a special trade status with the US, which grants it certain exemptions on trade that are not enjoyed by mainland China.

Last year, Congress passed and President Donald Trump signed into law the Hong Kong Human Rights and Democracy Act in support of the region's pro-democracy protesters.