It's the same deal tho - the federal government has no jurisdiction over the healthcare system either. The Obamacare, if you recall, in large part hinged on a "tax" created just for this purpose because taxation is the purview of the fed, which was a hack.
And even if Trump issued a "mask mandate" on the first day, for example, who is to enforce it? The FBI?
Yes, it's not written into law that the federal government has the specific power to drag kids back into classrooms and arrest people not wearing masks.
Do you think they have no levers to pull to affect policy from a federal level other than physically forcing people to do things? I'm not really sure what your point is.
And even if Trump issued a "mask mandate" on the first day, for example, who is to enforce it? The FBI?