Going by pictures anyhow, my impression is that Biden is not vigilant about wearing a mask. Perhaps not practical given his job. Plus, based on what I've read, anything short of a KN 95 isn't going to be terribly effective anyhow.
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Net 54-- the discussion board where people resent discussions. 
My avatar is a sketch by my son who is an art school graduate. Some of his sketches and paintings are at
https://www.jamesspaethartwork.com/
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