The US has revoked visas for more than 1,000 Chinese nationals over security risks.
The acting head of the US Department of Homeland Security, Chad Wolf, said earlier that Washington was blocking visas "for certain Chinese graduate students and researchers with ties to China's military fusion strategy to prevent them from stealing and otherwise appropriating sensitive research".
In a speech, Wolf repeated US charges of unjust business practices and industrial espionage by China, including attempts to steal coronavirus research, and accused it of abusing student visas to exploit American academia.
Wolf said the United States was also "preventing goods produced from slave labour from entering our markets, demanding that China respect the inherent dignity of each human being," an apparent reference to alleged abuses in China's Xinjiang region.
A State Department spokeswoman said the visa action was being taken under a proclamation President Donald Trump announced on May 29 as part of the U.S. response to China's curbs on democracy in Hong Kong.
"As of September 8, 2020, the Department has revoked more than 1,000 visas of PRC nationals who were found to be subject to Presidential Proclamation 10043 and therefore ineligible for a visa," she said.
Sectarian fighting in northwestern Pakistan which killed more than 80 people last week restarted on Monday, officials said, breaching a seven-day brokered ceasefire.
A US judge on Monday dismissed the federal criminal case accusing Donald Trump of attempting to overturn his 2020 election defeat after prosecutors moved to drop that case and a second case against the president-elect, citing Justice Department policy against prosecuting a sitting president.
US President-elect Donald Trump on Monday pledged a 25 per cent tariff on all products from Mexico and Canada from his first day in office, and an additional 10 per cent tariff on goods from China, citing illegal immigration and the trade of illicit drugs.
Israel is moving towards a ceasefire in the war with Hezbollah but there are still issues to address, its government said on Monday, while two senior Lebanese officials voiced guarded optimism of a deal soon even as Israeli strikes pounded Lebanon.
At least 15 Ankara-backed Syrian fighters were killed on Sunday after Kurdish-led forces infiltrated their territory in the country’s north, the Syrian Observatory for Human Rights war monitor said.