Donald Trump’s shock announcement that he has tested positive for coronavirus has plunged the US deeper into uncertainty just a month before the presidential election.
Although the White House’s physician has said Mr Trump is expected to continue carrying out his duties “without disruption” while he recovers, the diagnosis is sure to have a destabilising effect in Washington.
– What happens if the President becomes seriously ill?
While there is currently no evidence that Mr Trump is seriously ill, the positive Covid-19 test raises questions about what would happen if he were to become incapacitated.
The US constitution’s 25th amendment spells out the procedures under which the president can declare himself “unable to discharge the powers and duties” of office.
If he were to make that call, Mr Trump would transmit a written note to the Senate president pro tempore – Republican senator Chuck Grassley – and US House Speaker Nancy Pelosi.
US Vice President Mike Pence would serve as acting president until Mr Trump transmitted “a written declaration to the contrary”.
The vice president and a majority of either the cabinet or another body established by law can also declare the president unable to discharge the powers and duties of his office, in which case Mr Pence would “immediately assume the powers and duties of the office as acting president” until Mr Trump could provide a written declaration to the contrary.
Mr Pence’s aides had no immediate comment on whether the vice president had been tested or in contact with Mr Trump.
– What about the election campaign?
In the best of cases, if Mr Trump develops no symptoms – which can include fever, a cough and breathing problems – it will force him off the campaign trail just weeks before the election.
Mr Trump was last seen by reporters returning to the White House on Thursday evening and did not appear visibly ill.
The president is 74 years old, putting him at higher risk of serious complications from a virus that has infected more than seven million people nationwide.
– Could Joe Biden have been infected?
Mr Trump’s Democratic challenger, Joe Biden, has not issued any immediate comment on whether the former vice president has been tested since appearing in the first presidential debate in Cleveland, Ohio, on Tuesday night.
Mr Biden has spent much of the summer off the campaign trail and at his home in Delaware because of the virus.
The Democrat has since resumed a more active campaign schedule, but with small, socially distanced crowds. He also regularly wears a mask in public – something Mr Trump mocked him for at Tuesday night’s debate.
Mr Biden did not wear a mask during the televised debate.
– How could Mr Trump have caught the virus?
The president’s announcement came hours after he confirmed that Hope Hicks, one of his most trusted and longest-serving aides, had been diagnosed with the virus on Thursday.
Ms Hicks began feeling mild symptoms during the plane journey home from a rally in Minnesota on Wednesday evening, and was isolated from other passengers on the flight, according to a source.
She had been with Mr Trump and other senior staff on board Marine One and Air Force One as it travelled to that rally and had accompanied the president to Tuesday’s presidential debate in Cleveland, along with members of the Trump family.
They did not wear masks during the debate, in violation of the venue rules.
It is unclear where the Trumps and Ms Hicks may have caught the virus, but, in a Fox interview, Mr Trump seemed to suggest it may have been spread by someone in the military or law enforcement.
“It’s very, very hard when you are with people from the military or from law enforcement, and they come over to you, and they want to hug you, and they want to kiss you,” he said, “because we really have done a good job for them. And you get close. And things happen.”
Multiple White House employees have also previously tested positive for the virus, including Mr Pence’s press secretary, Katie Miller, national security adviser Robert O’Brien and one of the president’s personal valets.
– What are the White House’s testing protocols?
The White House has access to near-unlimited resources, including a constant supply of rapid result tests and began instituting a daily testing regimen for Mr Trump’s senior aides after earlier positive cases close to the president.
Anyone in close proximity to the president or vice president is also tested every day, including reporters.
However, experts have questioned the health and safety protocols and many are asking why more was not being done to protect the US commander-in-chief.