The NPC's decision is an essential measure to uphold national sovereignty, unity and territorial integrity and consolidate the foundation of the "One Country, Two Systems" principle. Meanwhile, the USA state department said that "any effort to impose national security legislation that does not reflect the will of the people of Hong Kong would be highly destabilising, and would be met with strong condemnation".
Secretary of State Mike Pompeo released a statement Friday saying he "condemns" China's parliament for proposing legislation that he claimed "would be a death knell for the high degree of autonomy Beijing promised for Hong Kong".
They are supposed to protect certain freedoms for Hong Kong: freedom of assembly and speech.an independent judiciary and some democratic rights - freedoms that no other part of mainland China has.
The US is now considering whether to extend Hong Kong's preferential trading and investment privileges. "Hong Kong people will now have to consider arrests and harsh sentences for protesting, speaking out, running for office, and other freedoms they have long enjoyed and struggled peacefully to defend".
US President Donald Trump said America would act "very strongly" if China was to go ahead with the proposal.
China could essentially place the draft law into Annex III of the Basic Law, which covers national laws that must be implemented in Hong Kong - either by legislation, or decree. This time, Beijing is making its intentions clear: Should Hong Kong, stuck in a political stalemate, fail to pass the laws backed by leaders in Beijing, then the People's Congress will use its absolute power to pass national laws that apply exclusively to Hong Kong.
Former Hong Kong leader C.Y. Leung defended the move in an interview with Chinese state broadcaster CCTV.
Chris Patten, the last governor of the former British colony, said China has betrayed the people of Hong Kong so the West should stop kowtowing to Beijing for an illusory "great pot of gold".
While the seven-month-long agitation a year ago in which millions took part subsided during the coronavirus crisis from January to April, protestors returned to streets this month, with the pro-autonomy and pro-freedom legislators grappling with the security officials in local legislature protesting against the curbs.
Amnesty International warned the legislation posed "a quasi-existential threat to the rule of law in Hong Kong". They should sanction senior Beijing and Hong Kong officials responsible for recent human rights abuses in Hong Kong and future abuses under the national security legislation, subjecting them to travel bans and asset freezes.
That shows Beijing has learned from the chaos and anarchy that quickly spread across the city in 2019 as a reaction to the introduction of an unpopular extradition law.
Prominent activists such as Joshua Wong have been petitioning foreign governments to help their pro-democracy cause in the city. "It was never clear what exactly the allegations and the evidence are, and the term national security is so vague that it could cover nearly anything", Professor Johannes Chan, a legal scholar at the University of Hong Kong, says.
Hong Kong was under British control for more than 150 years up to 1997.
The British and Chinese governments signed a treaty - the Sino-British Joint Declaration - that agreed Hong Kong would have "a high degree of autonomy, except in foreign and defence affairs", for 50 years.
It "seems to be increasingly the case that Beijing can treat and interpret the Basic Law in whatever way it likes", he continues.