Trade policy remains a big issue in Ohio, where polls show a tight race.
In a blistering speech, the Democratic nominee said the president "doesn't care" about the dual public health and economic crises.
C-SPAN's Steve Scully will moderate the second presidential debate and USA Today's Susan Page will moderate the sole vice presidential face-off.
In a speech hours before the final night of the RNC, Harris also described Trump's response to the coronavirus a failure.
In a wide-ranging interview with ABC News, Biden, alongside his running mate, Kamala Harris, also hit back against criticism about his campaign.