"Beijing has passed the sweeping #nationalsecuritylaw".
After the standing committee formally votes, the bill will be added to the annex of Hong Kong's mini-constitution, called the Basic Law.
The unanimous passage of the law by China's top legislature veers Beijing's relationship with other major powers into deeper uncertainty.
In his statement, Pompeo claimed that the action was taken to "protect U.S. national security".
The government kept ignoring our demands and upgraded to implementing the national security law.
"The US is attempting to obstruct China's legislation for safeguarding national security in the [Hong Kong Special Administrative Region] by imposing the so-called sanctions, but it will never succeed", he told reporters. The exact details of the new law have yet to be released. The act allows the U.S.to continue to treat Hong Kong separately from the Chinese mainland for matters including trade.
"The move severely impacts Hong Kong society's freedom, human rights and stability".
Ministry spokesman Zhao Lijian told reporters during a briefing that China is urging the United States to stop meddling in Hong Kong affairs, and warned that China will react with strong countermeasures if the USA continues its actions.
China considers Hong Kong to be an "inalienable" part of the country so any suggestion of independence are anathema to its Communist Party leaders.
The draft law has alarmed foreign governments and Hong Kong democracy activists, who are concerned that Beijing is eroding the high degree of autonomy granted to the former British colony when it was returned to Chinese rule in 1997.
Members of Hong Kong's opposition parties are also unclear if their public support for greater autonomy will disqualify them from seeking office.
Rights groups, many western governments and the Unitied Nations' rights body have expressed alarm over the law.
Beijing has reinterpreted that agreement as it's grown frustrated over its inability to coerce Hong Kong's population to submit to its rule.
The national security law is expected to pass before Tuesday.
Last month, President Donald Trump responded to China's plans for the security law by saying he was initiating a process to eliminate special economic treatment that has allowed Hong Kong to remain a global financial centre since its handover by the United Kingdom in 1997.
The fallout from the law is already being felt in Hong Kong. The city's July 1 holiday has always been marked by a large protest march by opposition groups, under the umbrella of the Civil Human Rights Front.
With the firewall gone, experts say that could accelerate a shift of corporate headquarters out of Hong Kong to Singapore and cities in the mainland such as Shenzhen and Shanghai. "We urge Beijing to immediately reverse course and fulfill the promises it has made to the people of Hong Kong and the world", the statement read.