Biden calls for nationwide mask mandate

Democratic presidential candidate former Vice President Joe Biden joined by his running mate Sen. Kamala Harris, D-Calif., replaces his face mask after speaking at the Hotel DuPont in Wilmington, Del., Thursday, Aug. 13, 2020. (AP Photo/Carolyn Kaster)

WILMINGTON, Del. — Joe Biden is calling for a nationwide protective mask mandate, citing health experts’ predictions that it could save 40,000 lives from coronavirus during the next three months.