Sources told the Financial Times that China's parliament would draft the new legislation and submit it immediately into Hong Kong's constitution. China's National People's Congress released an agenda Thursday saying it wants to "improve" national security protections in Hong Kong by curbing acts of treason, secession, sedition, and subversion. The measure would also allow for counter-terrorism operations against foreign interference in the city.

The legislation, slated for passage in the National People's Congress in Beijing next week, drew angry crowds in Hong Kong on Friday, and President Trump warned Thursday that the US would react "very strongly" to the planned legislation.