Any MD can do that right now. All of those drugs are already approved, and can be "off-label" prescribed, without any approval note from POTUS or anyone.
Whether a particular doc is willing to do that is a different question, but it's not illegal in any way.
> “Any MD can do that right now.”
Correct, but they don’t because they’ve been pussified.
MDs today don’t honor the Hippocratic Oath “First, Do No Harm”.
Their mantra today is “First, Don’t Get Sued”.
The leftist media along with the Bill Gates eugenicist psychopaths have invested tons of time in building the narrative that HCQ doesn’t work, can kill you, Trump is wrong about it, and so on.
They have in effect smeared it and branded it as not to be embraced.
It will take more than just letting MDs prescribe it on their own. It will take Public Service Announcements and strong leadership to move the needle.