Are Mask Mandates in Violation of Federal Law?

"The Food, Drug, and Cosmetic Act was established, in part, to put forth uniform standards based upon scientific justification for use. There are no uniform standards when it comes to mask mandates, just as there is no scientific justification. But, since most of the actions that have been taken since March of 2020 have been in violation of the US Constitution itself, why should we expect that to change now?" ~ Roger W. Koops