David Michaels, an epidemiologist who ran OSHA from 2009 to 2017 and served on the Biden administration's COVID transition task force, joins William Brangham to discuss. But they don't want to be cited by OSHA, because one thing OSHA does do is, they put out press releases. While we're telling employers to make sure their workers are vaccinated, we should also be saying, make sure people wear masks in situations where it's important to do that, where people are congregating, whether it's restaurants, at gymnasiums, warehouses.