Isn't this very different, though? Historically, mandated vaccines weren't mandated before we knew they were safe longer-term. We're still awaiting FDA approva

Isn't this very different, though? Historically, mandated vaccines weren't mandated before we knew they were safe longer-term. We're still awaiting FDA approval for a majority of the available SARS-CoV-2 vaccines in the US, yet many folks would be mandated to receive one. Many folks will see this as being mandated to be a test subject, which is why there has been substantial legal pushback against the mandate less than 24 hours after Biden announced it.