The president's remarks came during a call intended to discuss strategy for the Nov. 3 election. Trump has been at loggerheads with public health experts on how best to contain the pandemic.
As the campaign heads into the homestretch, Trump is testing out a new coronavirus message aimed at seniors, a key voting bloc that has given him poor marks on his handling of the pandemic.
Obama's first announced stop is Philadelphia. He has largely stayed out of the race, but he did deliver a blistering warning about President Trump during the Democratic National Convention.
Trump and Biden appeared on two different news networks at the same hour for town hall-style events, in lieu of what had originally been a scheduled debate.
The funding from the casino magnate and his wife provided a late cash infusion for President Trump's reelection effort as his Democratic rival, Joe Biden, raked in record-breaking sums.