Dr. Deborah Birx is the White House's coronavirus task force response coordinator.
In a Sunday interview with Fox News' Chris Wallace, she underscored the importance of wearing masks.
Out of respect for each other, as Americans that care for each other, we need to be wearing masks in public when we cannot social distance. Dr. Deborah Birx White House Coronavirus Task Force Response Coordinator
At the same time, she surmised that President Donald Trump hasn't done so because he's able to socially distance in most situations.
According to Business Insider, Trump has been criticized for repeatedly refusing to wear a mask during public appearances.
Notably, he refused to wear them on visits to a Ford plant in Michigan and a Honeywell mask factory in Arizona earlier this month