The Democratic presidential candidate Joe Biden voiced his support for Dr Anthony S Fauci on Monday hours after Trump suggested at a rally in Florida that he might fire the nation's top infectious-disease official,
Dr Fauci offered a critical assessment of the White House's response to the coronavirus crisis in an interview, reports the Washington Post.
"We need a president who actually listens to experts like Dr Fauci," Biden said in a morning tweet.
Appearing at his fifth rally of the day, Trump was complaining to a crowd at a Miami-area airport when his supporters began chanting: "Fire Fauci! Fire Fauci!"
Trump paused to listen a few moments before replying: "Don't tell anybody, but let me wait until a little bit after the election. I appreciate the advice."
In his interview, Fauci said the country is heading into a long and potentially deadly winter with an unprepared government unwilling to make tough choices.
"We're in for a whole lot of hurt. It's not a good situation," said Fauci, who also relayed that the White House coronavirus task force meets less frequently and has far less influence as the president and his top advisers have focused on reopening the country.
"Right now, the public health aspect of the task force has diminished greatly," he said.