The Chinese firm says it is "shocked" by an order for US companies to stop doing business with the app.
The court will test claims from President Trump's lawyers he enjoys total immunity while in office.
President Donald Trump has formally moved to withdraw the US from the World Health Organization (WHO).
The head of the US drugs regulator has cast doubt on President Donald Trump's prediction that a Covid-19 vaccine will be ready this year.
Foreign tech workers, non-agricultural seasonal helpers, au pairs and executives will be affected.
US Supreme Court rules against the president's bid to end Obama-era programme that protects children.
US President Donald Trump sought help from Chinese President Xi Jinping to win re-election, ex-National Security Adviser John Bolton's new book says.
The US Department of Justice has filed a lawsuit to prevent former National Security Adviser John Bolton from publishing a new book about his time at the White House.
The US president threatens to "take back" a police-free district controlled by protesters.
The president said the bases named for rebel generals "have become part of a Great American heritage".
Former US military chief condemns the president's threat to use the army to quell unrest in US cities.
Former Joint Chiefs of Staff Chairman Gen Martin Dempsey calls the president's remarks "dangerous".
The social network says it will drop Trump from Discover over 'racial violence and injustice'.
Civil rights chiefs say they are "disappointed and stunned by Mark's incomprehensible explanations".
As fury over George Floyd's killing continues, religious leaders condemn President Trump's actions.
Protests and violence continue for a seventh night amid fury over a black man's killing by police.
The president accuses the UN health agency of "failing" over its handling of the Covid-19 pandemic.