The U.S. Transportation Department has announced it will suspend Chinese passenger carriers from flying to the United States starting June 16.
A statement says the move is in response to China's "failure" to allow US carriers to resume flights to and from China.
US airlines suspended services to China in late January when China was struggling to cope with its COVID-19 outbreak.
In March, China adopted what's known as a "five one" policy to prevent imported cases.
It allows each airline to service only one country with no more than one flight a week.
But because U.S. passenger airlines had stopped all flights by then, they were excluded from the list of carriers allowed to fly scheduled passenger flights to China.
Chief Executive Carrie Lam says the Hong Kong government fully supports the national security legislation in the city.
She made the statement during her trip to Beijing to hold talks with central authorities on the issue.
The chief executive has also called on other countries to respect the legislation as well as their relations with China.
"The so-called 'sanctions' from some foreign countries and the threat to revoke Hong Kong's special trading status are a kind of intimidation. In my opinion, it's completely groundless as national security law should be applied in every part and corner of a country, and Hong Kong is of no exception."
Chinese lawmakers voted overwhelmingly last month to approve the national security legislation for Hong Kong at the country's annual legislative session.
Vice Premier Han Zheng has reiterated that Chinese central authorities will firmly implement the "one country, two systems" policy, and resolutely safeguard national security in Hong Kong.
Han is the head of the central leading group on Hong Kong and Macao work.
He met with chief executive Carrie Lam on Wednesday to hear the Hong Kong government's opinions on the national security legislation for the city.
He stresses that the legislation is to punish the criminal acts and activities that gravely endanger national security and will not affect the legitimate rights and freedoms of Hong Kong residents.
Han also says the central government will hear opinions from people from all walks of life in Hong Kong during the legislation process.
Two UK-based banks have given their backing to China's national security legislation in Hong Kong.
Chief Executive Peter Wong of HSBC's Asia-Pacific branch has signed a petition backing the law, saying the bank "respects and supports all laws that stabilize Hong Kong's social order."
Meanwhile, Standard Chartered says it believes the law can "help maintain the long term economic and social stability of Hong Kong."
Three more police officers have been charged in the death of African American man George Floyd.
Also, the charges against Derek Chauvin, who pinned his knee on Floyd's neck, have been increased to second-degree murder from third-degree murder.
Chauvin was fired May 26 and initially charged. Three other officers were also fired but weren't immediately charged.
U.S. Defense Secretary Mark Esper says he opposes the use of active-duty military forces for law enforcement duties in containing the unrest.
His remarks come after President Donald Trump threatened to deploy the army to deal with the ongoing protests across the U.S.
The International Council of Nurses says more than 600 nurses worldwide are known to have died from COVID-19 while about 450 thousand health workers have contracted the virus.
Infection rates vary greatly between countries, with one percent in Singapore and 30 percent in Ireland.
Spain and Germany have recorded low numbers of fatalities among healthcare workers despite having large outbreaks.
The figures are based on data collected from more than 30 countries.