Mask mandates are both ineffective and unconstitutional. From Ron Paul at ronpaulinstitute.org:
Almost immediately after his inauguration, President Joe Biden began creating new government dictates via executive orders. Many of these executive orders concern coronavirus, fulfilling Biden’s promise to make ramping up a coronavirus-inspired attack on liberty a focus of his first 100 days.
One of Biden’s executive orders imposes mask and social distancing mandates on anyone in a federal building or on federal land. The mandates also apply to federal employees when they are “on-duty” anywhere. Members of the military are included in the definition of federal employees. Will citizens of Afghanistan, Iraq, and other countries where US troops are or will be “spreading democracy” be happy to learn the troops shooting up their towns are wearing masks and practicing social distancing?
Another one of Biden’s executive orders forces passengers on airplanes, trains, and other public transportation to wear masks.
Biden’s mask mandates contradict his pledge to follow the science. Studies have not established that masks are effective at preventing the spread of coronavirus. Regularly wearing a mask, though, can cause health problems.