President Donald Trump on Tuesday ordered an end to Hong Kong's special status under US law to punish China for what he called "oppressive actions" against the former British colony.

Citing China's decision to enact a new national security law for Hong Kong, Trump signed an executive order that he said would end the preferential economic treatment Hong Kong has received for years.

"No special privileges, no special economic treatment and no export of sensitive technologies," he told a news conference.

Acting on a Tuesday deadline, he also signed a bill approved by...