The president tweeted that his first debate with Democrat Joe Biden should be earlier than the current schedule, which starts Sept. 29.
The former Democratic presidential candidate says Biden is "licking his chops" for a shot at Trump on the debate stage.
The University of Notre Dame withdrew as a host for the debate because the necessary health precautions would lessen the event's educational value.
The former vice president said he would pick a woman as his running mate if he secures the Democratic nomination to challenge President Donald Trump.
The two Democratic presidential contenders agreed on short-term measures to address the COVID-19 outbreak, but disagreed about plenty of other things.
Bernie Sanders put the former vice president on the defensive concerning the issue in Sunday's debate.
It didn't come from the president -- it came from the two Democrats vying to replace him.
The confrontation between the two leading Democratic candidates felt more than a little surreal as fears continue to grow over the coronavirus pandemic.
Bernie Sanders, his top rival for the Democratic nomination, said he would choose a female running mate "in all likelihood."
The debate won't have an audience due to concerns over the coronavirus pandemic.