He doesn't have that power, nor does Biden. They can tell you what to
do when you are on executive branch property but out in the world
perhaps a governor could but not the federal government. (10th
amendment)
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The important thing is for the POTUS to lead by example and not mock
people who are trying to do the right thing. It's also important to
show some respect for science and medical professionals, unlike DJT.
Lord Faucci said masks weren't needed and then changed his mind, as the
political winds blew, Lord Faucci said they were necessary.
If Faucci had any honor he would STFU and resign for being dishonst and
lying to the American people.