US President Donald Trump wears a face mask in public for the first time during a visit to the Walter Reed National Military Medical Centre in Bethesda, Maryland, on July 11, 2020. Reuters
US President Donald Trump wears a face mask in public for the first time during a visit to the Walter Reed National Military Medical Centre in Bethesda, Maryland, on July 11, 2020. Reuters

Coronavirus pandemic rains on Donald Trump's re-election parade